> the product occupies little space and it's trivial to keep around

Haha, I have found this to absolutely NOT be the case! Each individual mini only takes up and inch or so, but they multiply and between them and the brushes/airbrush/paint racks and the ever-increasing grey Pile of Shame, it’s not a small amount of space taken up!

It is an extremely rewarding hobby with a low bar to entry, though, and I agree that I will probably never stop.