I mostly chuck boxes immediately, though I do keep an odd "representative" box for a certain line sometimes. MOst of which are in the wardrobe of the collection room, At times when the boxes are pretty I keep em ( MPs box) and they might end up on top of the shelves of the collection. I got my G1 collection mostly loose, so the modern reissues that I get ( takara booktype) are the only boxes I keep but those that came with boxes ( usually not the best in condition) I just chuck away.