To you wonderful posters who told me about the chubes, I wanted to share with you that I got mine (mediums that are plenty big for my lovies) for just 1.99 each. I bought 6 of them and shipping was around 7.00.
I got them here and it was the best price that I could find anywhere!
http://www.petstore.com/
Thank you all again for the wonderful ideas that you all give! My lovies LOVE THEM!