What changed: I have only one small complaint about sams3dprints' Mahjong Tile Holders: since they're so well designed to hold tiles, they have a very irregular shape that makes storage and transport a hassle! Enter the Mahjong Tile Holder-Holder! I took the previous design, bumped it up 102% or so, and inverted it to make four columns of three holes each, so they can hold a full set of tile holders. I also added a little recess to expoxy in a magnet, for some extra security in storage.
I also added a magnet for a recess on top in two spots: to take advantage of that you can flip this design horizontally for a “top” to store the tiles, then when they're in use the two storage units can stick together to keep things tidy while you play Mahjong. More pics coming soon!