There are a lot of interesting things that can be done with small pieces of molding which might otherwise go in the trash. In addition to ready-mades in standard sizes, I like to make keepsake boxes out of the more interesting pieces.
These are just a couple that I happen to still have, I sold MANY others without taking pictures of them.
Just something weird from a lot of small pieces.
I've worked extensively with the Eclipse computerized mat cutter, but I grew up using the traditional hand mat cutters. The yellow core perspective one is by hand, and the flag is inlaid pieces.