Parts Cache

While you are putting it all away, take a quick cell phone picture of every item. In addition, If possible fill in a spread sheet for the item too. But nowadays taking a picture is quicker, so you can make that first priority.

Just like the simple quick pics like you posted above. One per item is fine. The key is quick. Don't worry about cropping it right or even rotation. That can be fixed later. Maybe you are already doing this?

At some point you will forget what you have. Starting a spread sheet will allow you to put a what you think it's work now. Or slowly work on that. Then when you are ready to sell pieces you have a great head start.