Doesn't require supports. I printed mine in PLA, but most filaments should work. I wasn't able to find a bin that I liked, so I designed my own. The bins are designed to line up with < 1mm in between to maximize the available space.

As the name suggests, the 2x bin is (roughly) twice as large as the 1x bin.

2023-08-27 Update:

• Added “thin” versions of the bins. These have 1.5mm walls, compared to the 2.5mm walls of the original. The back is still 2.5mm to reduce the chance of damage when inserting and removing from the HSW.