AJ, Orrin, and Rylee love theirs! AJ (lovebird) sleeps and plays in his all the time. I have made most of my tents out of polar fleece with a sealed "pocket" in the bottom with a rectangle of plastic from an old rubbermaid tub lid. I throw them in the washing machine when they are soiled, and they are holding up nicely. If you can make you own tent, make sure not to leave any strings and check it often for wear. It is definately faster, easier and cheeper to make your own tent if you can! :)
One of my homemade tents:
