So, not only are you wasting time cataloging it, but you have to stop and determine if it's worth saving or not, enter it into your spreadsheet and then find a place to store it. Yeah, that makes a lot of sense.
We have several areas in the shop designated for this stuff.
We have a section for pvc and acrylics, one for MDO, alumalite and dibond and one for Cor-X. If things are under a certain size, we immediately toss it. Otherwise it goes into it's designated area and gets used eventually.
We have a few racks for vinyls, also. We generally will cuts lotsa pinstripes or circles with left over colors.
In addition Addie.... not to bust yur chops, but you're gonna tell me you catalog your cutoffs and off-falls in case of some unforeseen disaster, which indicates you buy a sheet of MDO and only charge the customer for the small portion he bought. So you now have an unpaid piece of substrate in your inventory. How long can you go on doing that and stay afloat ??