I really love boxes.py, and have contributed several designs. The flexbook, shadowbox, coinbanksafe, and frameloom are all mine :)

I'm really proud of the loom.

https://boxes.hackerspace-bamberg.de/FlexBook

https://boxes.hackerspace-bamberg.de/Shadowbox

https://boxes.hackerspace-bamberg.de/CoinBankSafe

https://boxes.hackerspace-bamberg.de/FrameLoom

Recently I've been on a kick making bracelets with that frame loom. The rotating heddle bar makes it super quick to warp up. I've written about how to go from woven rectangle to bracelet here:

https://ojensen.net/musings/bracelet-on-frame-loom