I wished I would have thought of this sooner. I picked up some more storage boxes when I was at Harbor Freight last week. Vans sends everything in small plastic bags. There might be 6 different sized rivets in one plastic bag. When I was searching for things, I ended up dumping the bags into bowls.
I had started using one of the bins for rivets from the very beggining... but there were about 5 different rivets that didn't fit. By rearranging and using smaller bins, I was able to get all the rivets in one box. (The blind rivets are in another bin not shown.)
I was actually amazed that there were so FEW bolt, nut, and washer sizes. When I would search for one, I could never find it... and there ended up being 20 of them.
I didn't put some of the parts in the bins. The wing bolts and some other specialty items, I left bagged.