I am posting this per a request from another user:
How I made my acrylic bird cage:
I went to a home improvement store and bought four sheets of plexiglass, 5/8 inch blunt-ended screws, one sheet of plywood, a long corner wood piece, and a window screen. Estimated cost of materials: $60
Check out the pictures first to see how it is made, as I'm not very good at explaining:
Side view of the enclosure
Picture with the screen off
Cut the long corner wood piece into four pieces, each as long as a side of plexiglass. Line the wood edge up with a piece of plexiglass, and screw about 6 holes. It is easiest to drill through both the wood and the plexiglass at the same time, although you have to drill very slowly and carefully, or the plexiglass will crack. It's a good idea to have a couple extra pieces of plexiglass on hand. Make sure to mark which side of the wood goes with which side of plexiglass (numbering the sides works best.) Continue until all four pieces have been drilled through. Then set them up and put the screws through, add a nut on the other side of the screw, and tighten. The plexiglass box can be set on the plywood, and the window screen goes over the top.
I use bird-safe aspen wood shavings to on the bottom of the enclosure. Make sure whatever bedding you get is approved for birds! To clean, simply lift up the plexiglass cube, and sweep the bedding into the garbage. You need to clean the cage fairly often, as it's not healthy for a bird to be walking around in its own droppings. I clean the cage every couple days. I periodically spray the plexiglass with water and wipe it clean. Make sure the screws stay tight. You could definitly add a plexiglass divoder to the middle of the cage to make it safe for two different kinds of birds. Just make sure the divider fits securely. If you have a pet like a dog or cat, or small children, elevate the enclosure to a table-top, and make sure to keep it somewhere it won't get bumped. Let me know if you have anymore questions.