scienceA free build from Aventary Lab

A daily letter to your kid at camp. AI builds it. You make it yours.

Set it up once. Every morning, one sentence builds the whole letter — last night's ballgame, the joke, the logistics — then hands it to you to edit, sign, and send. You're always the last word.

Yesterday's ballgame with bunk-worthy banter, a dad joke, a note from a little sibling, and a message from you — fresh every day, never the same twice.

Build my setuparrow_forwardHow it worksFree · works in Claude or ChatGPT
To: camper@yourcamp.com
Subject: Eli Klein
Hey Eli!!

Day 5 already — you've got your bunk, your counselor, and you know which lunch to show up early for. So proud of you!

sports_baseballSports CornerWalk-off win, 4–3 in the 9th! Tell your bunk the good guys don't quit. 😎
sentiment_very_satisfiedJoke of the DayWhy'd the player bring string to the game? To tie the score!
favoriteFrom GoldieEli!!! I miss you a MILLION. I made you a purple crown. Come home soon!! 💜
edit_noteFrom DadThinking of you all day. How's your bunk — is your counselor cool? Counting down to our call!
Love, Dad
What's inside every letter

Four ingredients a kid actually wants to read.

sports_baseball

The game

Their team's latest score, with trash-talk-lite they'll repeat to the whole bunk.

sentiment_very_satisfied

The joke

A clean dad joke or riddle — never the same one twice in two weeks.

favorite

The sibling

A few sweet lines in your little one's voice — drafted from what you tell it they did, ready for you to tweak.

edit_note

You

Your note to them. AI hands you a first line and a question that fits the week — you make it yours before it sends.

The part that makes it feel alive: it keeps a private log of every letter — so it never recycles a joke or asks the same question twice, and the themes shift as camp goes on, from “settling in” to “what trip is next?” to “almost home.” That memory lives on your device (or in the skill's own log file) — never on our servers.

A real letter, start to finish

This is what lands in the draft.

To: camper@yourcamp.com
Subject: Eli Klein

Hey Eli!! ☀️

Day 9 already — you're officially a camp veteran now. You know the shortcut to the lake, you know which night is pizza night, and your bunk knows you're the one to beat at gaga. So proud of you, buddy.

⚾ Sports Corner

The Yankees walked it off 5–4 in the 10th last night — bases loaded, two outs, and Judge just parked it. The kind of game where you forget to breathe. Tell your bunk the good guys don't quit. 😎

😂 Joke of the Day

Why did the baseball player bring string to the game? So he could tie the score!

💌 From Goldie

ELI!!! I lost my front tooth and the tooth fairy left me TWO whole dollars so now I'm basically rich. I'm saving you a gummy worm. Come home soon I miss you the most. — Goldie 💛

✍️ From Dad

Camp's flying by, huh? I keep catching myself about to text you stuff and then remembering you're off being a legend in the woods. Quick one: who's your favorite counselor so far, and did you ever try the climbing wall? Counting down to our call on Sunday. Love you, bud.

Love, Dad

LOG: joke="…brought string… tie the score"; question="favorite counselor / climbing wall"

history_eduThat last line is the memory at work — tomorrow it won't reach for the same joke or ask the same question.

Drafted in seconds. Then a parent edited the Goldie and Dad lines into their own words before sending — same as you will.

How it works

Two minutes to set up. Ten seconds a day after that.

01edit_note

Describe your family

Fill in the quick form below — your child, the camp email, their team, who's writing, any siblings. It all stays in your browser.

02content_copy

Copy your prompt

One tap copies a personalized setup prompt, built from your answers. No account, no install.

03forum

Paste into Claude or ChatGPT

Start a new chat and paste it in. Tip: save it as a Project or Custom GPT so it remembers between days.

04bolt

Say “write today's letter”

Each morning, one line. Review the draft, tweak it, send it. Nothing goes out without you.

You'll need: a free Claude or ChatGPT account. In Claude with Gmail connected it can drop the letter straight into your drafts; anywhere else it writes the letter for you to copy into your own email. Your family details never leave your device.

Build your setup

Tell it about your family. Get a prompt you can paste anywhere.

Fill in as much as you like below — it builds a personalized prompt on the right. Copy it into Claude or ChatGPT and you're running. No skill to install, no account with us, nothing saved on our end.

lockEverything here is saved in this browser only — your family details and the no-repeat memory never touch a server. Come back any day and it remembers.

Your child
Camp
What makes it fun
The family voice
Extras (all optional)
Sections to include

Your prompt

Paste this into a new chat in Claude or ChatGPT — then each morning say “write today's letter.” Saving it as a Project / Custom GPT keeps it handy all summer.

Or open it prefilled

Opens a new chat with everything filled in. Sign in if asked, then send.

history_eduNo-repeat memory

0 logged

After each letter, paste it back here (or just its LOG: line). The builder remembers every joke and question so future prompts say “never repeat these.” Stored only in this browser.

Prefer Claude on a computer?

Install the packaged skill instead — it saves your profile to a file and runs every day with one sentence.

downloadDownload the skill
Make it stick

Save it once so it's ready every morning.

Don't paste the prompt fresh each day — park it somewhere it'll wait for you. Then your whole morning is one sentence.

auto_awesome
In Claude

Save it as a Project

  1. 1Open Claude → Projects → new project, name it “Camp Letters — [child].”
  2. 2Paste your prompt into the project's instructions.
  3. 3Each morning, open the project, start a chat, and say “write today's letter.”

tips_and_updatesTurn on the Google/Gmail connector and it can drop the letter straight into your drafts.

smart_toy
In ChatGPT

Save it as a Custom GPT

  1. 1ChatGPT → Explore GPTs → Create (or use a Project).
  2. 2Paste your prompt into the Instructions, keep it private.
  3. 3Open it each morning and say “write today's letter.”

tips_and_updatesChatGPT's Tasks can even nudge you at the same time each day to run it.

A saved Project or Custom GPT also remembers your past letters in its own thread — a nice backstop to the no-repeat memory in the builder above.

Where to run it

Two ways to run it — pick how hands-off you want to be.

The prompt above works in any AI chat. If you want it fully automated — drafting straight into your inbox — run it in an AI agent that can connect to your email. Either way, you only ever press send.

chat

Chat mode

Claude or ChatGPT · any phone, free
  • checkPaste your prompt into a new chat — save it as a Project (Claude) or Custom GPT (ChatGPT) so it sticks all summer.
  • checkEach morning, say “write today's letter,” then copy it into your email.
  • checkLog each letter back into the builder above so it never repeats a joke or question.
  • checkNothing to install. Works on the bus, in the carpool line, anywhere.
smart_toy

Auto mode

Cowork or Claude Code · hands-off
  • checkInstall the skill and connect your email — it drafts the letter straight into your inbox.
  • checkIt pulls last night's real score and keeps its own log file, so no-repeats are automatic.
  • checkYou just open your drafts, glance, and hit send.
  • checkBest if you want it to mostly run itself each day.

You don't need a coding tool for any of this — Camp Letter is for a parent, not a programmer. A normal AI chat (Claude or ChatGPT) covers the everyday case; an AI assistant with email access does the rest.

Why a RevOps consultant built a camp app

Because this is exactly what I do — just usually for revenue teams.

I build small, sharp AI tools that take a fiddly human job and make it one sentence. A daily camp letter is a charming version of the same thing I build for go-to-market teams every week: capture the workflow, kill the repetition, ship something people actually use.

If your company's revenue engine feels held together with manual steps and spreadsheets, that's my day job.

See the RevOps diagnosticarrow_forward

Made for my own kids first. Then opened up for yours. — Mendy