building a "snake rack"?

I'm new to this forum but not to snake keeping, I keep all of my snakes in tanks but as my collection grows my responsibilities grow, and although it's well worth it I think I'd really like to have a "snake rack" to keep some of them.
I don't have a huge budget, so buying one seems out of the question unless I can get one for around 200$ that has like 10 tubs that can hold adult corn snakes.
So I was wondering what materials would work best for making my own, and where I might be able to get large enough tubs that can withstand heat and humidity, as well as the shelf that the tubs will go in.

here are plans for one I made: http://www.blueappleherps.com/page13/page14/page14.html

You can substitute the Sintra for plywood. Just seal it up well and you're set to go. This one uses the sterilite 41 qt tubs.

Here's a couple more:

http://northeastsnakes.com/racks.html
http://www.faunaclassifieds.com/forums/showthread.php?t=102800

thanks, I really appreciate all of the information.

Woohoo guys thanks. Snake rakes make haveing lots of snakes look fun and easy and save on the worry of space.

wow...this is a great list! Now I wanna build another rack!