~Alexandrine Parakeet~2 Red Lored Amazons~Blue Fronted Amazon~Black capped conure~4 Green Cheeks~4 Parrotlets~2 lineolated parakeets~9 American budgies~9 English budgies~ And lots of babies :)
Well, if you can find or make a mold, cement isn't hard to work with. Although it might be hard to find a small bag of it to use just for this, and you will have a lot left over. Storing it is hard, too, because the mix will suck up moisture and begin hardening on it's own.
My experience with them though is that they last a very long time, so I do just buy them instead of make them.