Been preparing my room of doom and was going to stack up some of my old gameboy, gbc and gba games but most of the old boxes were pretty flimsy. Only good ones were the ones that had the plastic insert in them to give the whole case strength. As for the other ones that have a small sleeve and the rest of the box blank, what does everyone use to keep the boxes from getting smushed up? Could mailing peanuts be used inside of the boxes? Just trying to get an idea on what others are using. Anyone else deal with this problem before?