Want to build a rack this weekend/ beginning of next week. Can't decide what to make it out of. Please share your opinions!

Melamine - Readily available. I don't care about weight so much. I want to go lidless though, and I am concerned about warping, mold, etc.

Storage shelves - I have seen plenty of people modify storage racks and make some really clean set ups. I like this idea, but I haven't been able to find any storage racks at a reasonable price that will fit my 41qt long tubs. Also, I would prefer to make these enclosed so I can avoid hides.I would be interested in seeing how anyone has done that

Other - If you have any other DIY suggestions please let me know! I won't buy a rack somewhere, because I would rather spend the money on more snakes or more supplies, rather than a rack. I am plenty handy and have the ability and tools to make any rack out there myself. I was thinking about building one out of XPVC or something of the sort, but I can't find sheets at a good price. If anyone knows of a cheap plastic supplier, please let me know. I just can't see paying $600+ for materials to build a rack that I could buy for around $500.