This is my latest project. I had some extra 1/4" Sintra PVC sheets left over and some 1/4" Acrylic. I figured it was time for my wife's Tarantulas to get a new home. The PVC works pretty good aside from having to chemically bond it. I probably used a little over half a sheet of PVC, but it was mostly scraps. And of course, the material is cheap. A 4x8 sheet only costs me $37. But I used alot more acrylic than on any other enclosure.
She has 6 Tarantuals right now. All of the spiders have to stay upstairs and out of the herp area because of permethrin. 6 spiders were starting to take up alot of room. So I came up with the condo idea. The unit is 38" long, 13" deep, and 16.5" high. I divided this into 6 enclosures. My main problem was light. There was no way to add additional lighting. So I made the sides and the dividers acrylic so that light from the room would reach even the center cages. It turned out looking pretty nice. Not bad for about 8 hours actual work time. Especially since I had no idea how I was going to design it, I just started building and figured it out as I went.