What do you do for your inventory? How do you do it? Do you use a spreadsheet? What info is important to you, and do you go back into your inventory for specific reasons?
I apologize for any confusion caused by my formal word choice. What I mean by “inventory” is figure out what you have, make sure you have all of the parts and pieces, and have at least a general idea if it works (or has the potential to work). You seemed to have done this in post #11 above. It is not worth your time to clean everything only to realize that the stuff includes a few mismatched pieces from HOB filters and a few pieces from a radio controlled car that were all stuck in the box for some unknown reason. If you decided to put it away in a box before or after you clean it then a list will help so you don’t have to pull out the box and sort through everything every six months in order to remember what you may or may not have.