Guys my mother's minivan broke and my only alternative left for transportation is RTA and it'll be too difficult for me to bring all that heavy MDF home using RTA so I'm looking for alternatives to build my enclosures. I know cardboard is a viable solution but the largest I could find was the 12" x 48" ones and those are not big enough for the volume I want to use. I thought about plastic containers and thrash cans because they have a useable size that will allow me to build enclosures bigger than 5 ft3. The problem is that I never heard of somebody building any good sounding speakers using them and I thought that maybe here I can find some accurate answers about if it's viable or not. Thanks in advance for reading and try to help me.