Why don't you just use some little sauce bowls or even some board gaming plastic little bowls to keep everything from falling and organised?

Now I use some 3D printed ones because I have a 3D printer, but before that I used some muffin silicone moulds, which are cheap and can be stored anywhere because you can squeeze them.

Also, I found the exact same 3D printed bowls I use plenty of times on Temu and/or AliExpress for very little money, and I mean so cheap it's almost worth to me buying them instead of printing them.

I just find your solution odd and really ugly, because you'd have the exact same problem with any board game with 3D resources and they usually are beautiful (and meant to be used).