I always do in my computer. Receipts for personal property are made in to digitized copies from electric shavers to air conditioners. I have an Access database for home inventory. That is a big can of primer I ordered from amazon, Lowe's hardware size, though, not the typical little 3 oz modeler's can. You can't get some stuff in my small hick town in Oklahoma at the local Hobby Lobby. My chrome touch-up paint had to be special ordered to boot. Many car and truck kits have "chrome-plated" parts and they need to be touched up in the spots where they are cut off from the runner with an Xacto knife. Using silver paint to do this isn't kosher.

I'll have to consult with my insurance agent about how they appraise home-made hobby items for losses as models, crafts, art and furniture.