These are many variants of a hex bit holder I use in my wooden tool box. The recess underneath each hex bit is for a neodymium magnet (8 x 3 mm). I'm from Sweden and I use these: https://www.kjell.com/se/produkter/hem-fritid/gadgets/neodymmagnet-8-mm-10-pack-p50070. You can find similar magnets on Amazon. Print with support underneath each hex bit. The magnets are press fitted.
bit_holder_10x1.stl | 216.9KB | |
bit_holder_10x2.stl | 356.3KB | |
bit_holder_5x2.stl | 206.8KB | |
bit_holder_tall_6.stl | 150.4KB | |
bit_holder_tall_7.stl | 164.1KB |