I still use heavy ceramic crocs for a few tubs, but for most of them I've gone with the PVC coupler/plastic deli cup set-up, which I think you've seen at least once or twice over here. I don't know if you've tried that before but it's been an enormous time saver for me. I clean the cups every 4-5 days and replace after two weeks. I've never had a single spill, and while they can't exactly get a full-body soak, the plastic cups I use are larger than the built-in bowls that come in the cb-70 freedom breeders.
edit: since they're plastic, I recycle everything. and they're cheap to order in bulk.