Thanks everybody. Yea, the cardboard held up surprisingly well. I spraypainted it, then coated it with a layer of gloss sealer, so its waterproof and wont get damaged by moisture. This isnt the same pack I used when I went into Best Buy, that pack is still in NYC, unfortunately I couldnt fit it in my car when I moved here to Michigan, so I decided to make a new one since halloween was approaching, even though that one is better, it has lights and an ALICE Pack frame. The cardboard for this pack is thick though, about 1/4" thick. I could have added lights and stuff, but decided not too, since I didnt have much money. It cost me around $60 to make the thing, in about 3 days.