My wife recently got into doing embroidery, and has a bunch of spools of thread for it. She keeps them all in a little bin she got at The Container Store (she's using their product ID 11012519 if you want to go have a look). She asked me for something to keep them better organized while still leveraging the bin, and that's where this came from!

I printed this in PLA on my A1 Mini, 0.4mm hardened nozzle, using the stock 0.2mm layer height profile. She's got these groovy little stick-on dots that she uses with her mats to keep them from sliding, and dropped a couple on the bottom of these. They stay put nicely in the bin and things are super neat.

The picture shows 1 of them. The 2nd one to fill out the other side of the tray is printing right now as I write this!