Tiny toys for your desktop.
A burlap pocket hangs on the edge of your screen. Pull out a marble and flick it: it rolls, clicks off the Dock and the other marbles. Your Mac keeps working exactly as before.
For Apple silicon Macs · macOS 14 or later · no account, no tracking
Things to play with
Each one has real physics: weight, spin, bounce and sound. Your pointer is a fingertip, so you can nudge them without clicking.
Marbles
Glass with swirls that roll through them. They skid when thrown, then roll, and click off each other, the screen edges and the Dock.
Spinning top
Press it and circle the pointer to wind it up. Let go and it spins, wobbles, loops and falls over with a wooden clack.
A hamster
Unzip the pocket and it climbs out to collect the marbles, playing keep-away if you flick them. Or roll it around in its glass ball.
The pocket
Zip it, squeeze it, carry it by its grommet and hang it anywhere. Shake it and things tip out.
Make a mess on purpose. Watch it sort itself.
Drop a pile of files on the pocket and they spill out as marbles: red glass for PDFs, blue for documents, the photo itself for images.
- Drop files or folders on the pocket. Folders ask: magnets, marbles, or everything inside.
- Place magnet folders: real folders with a rule, like .pdf, all images or .json.
- Watch them pull. Matching marbles drift in, the glass pops, and a copy lands in the folder.
Roll a screenshot into Claude or ChatGPT
Every screenshot drops in as a clear marble with the picture inside. Roll it into the chat's message box and it pops open as a real attachment.
- Take a screenshot any way you like.
- Flick the marble toward the chat. The box lights up: “Drop into Claude”.
- Pop. It's attached, and your clipboard is put back as it was.
Same pocket. Pick how you get it.
The core toys are open source: build them yourself for free. Or buy the ready-made app, with bonus toys only it gets.
Open source
For tinkerers who like to build things.
- The toys: marbles, the spinning top and the hamster
- The pocket: zip it, squeeze it, carry it, shake it out
- File marbles and magnet folders
- Screenshot marbles for ChatGPT and Claude
- The full source code (MIT license): add your own toys and send them in
- You build it yourself: one Terminal command, with Apple's free developer tools
- You rebuild for each update
- Unsigned: macOS asks before opening it
Help and ideas on GitHub Issues
Thunk Pocket
For everyone who wants the toys, not the toolchain.
- Everything in Open source
- Bonus toys: an expanded toy box only in this version (the first ones are on the way)
- The finished app: download, drag to Applications, done
- Signed and notarized by Apple: opens without warnings
- One year of updates included; the app keeps working after that
- For Apple silicon Macs
Pay once · one year of updates · no subscription
Either way it runs entirely on your Mac, and your files are never touched: marbles only point at files, and magnets copy.
Questions
What's the difference between free and paid?
Free is the open-source core (the marbles, the top, the hamster, file magnets and screenshot marbles) that you build yourself from GitHub. Paying gets you the finished app, signed and notarized by Apple, a year of updates, and the bonus toys that only the paid app has.
What happens after the year of updates?
Nothing stops working: the app is yours to keep. Versions released after your year just aren't included in that purchase.
Will it touch my files?
No. Turning files into marbles copies nothing: a marble only points at its file. Magnet folders put a copy inside; your originals stay where they were. Nothing is ever overwritten or deleted, and every step has Undo.
Does it get in the way of my Mac?
No. Clicks go straight through to your Mac everywhere except over a toy or the pocket, and an idle desk uses about 1–5% CPU. Hang the pocket wherever you like by its grommet.
What permissions does it ask for?
Your Desktop folder, to notice new screenshots. Accessibility only if you use screenshot marbles with ChatGPT or Claude, so it can find the message box and paste. Nothing leaves your Mac.
Which Macs does it run on?
Apple silicon Macs (M1 and later) on macOS 14 Sonoma or later.