I shy away from most "non-flat" stuff, just because the bulky stuff takes up much more space that is already limited. I like the idea though, as sometimes threads like these make you aware of something you were otherwise oblivious to. Maybe someone will show something that i just must have...
These specifically are not mine as mine are stored at the moment, I went to the internet for images, but I do have one of each of these countertop charity coin displays that were used in the 70s. I seem to recall seeing one in public in use and as a kid was fascinated with all the coins sitting in their respective slots. I forgot about them, but after the discovery of ebay in the late 90s, finding old stuff became much easier.

