I use small rodent dishes for adults. For hatchlings I cut the bottom off plasic cups, then melt the edges so they are not sharp. For calcium dishes I use 1oz cello cup lids.
What do you think the market would be for something like this: http://www.don.com/images/products/individuals/2C687.jpg. Walmart used to carry them but no longer due. I have access to some really nice bulk pricing, however I could sell them for just over $1 a piece, where as Walmart was selling them for like .75cents, hence the reason I think they STOPPED carrying them... lol
I use store bought water bowls for adults and for babies I use lids from these tiny containers I got at the dollar store got like 20 for a $1. Calcium lids I went through our cabinets and took all the lids off the spices we never use LOL.
They can be run through the dishwasher, and boiled and they look good. They have kidney-shaped bowls that I use for the water (larger).
For calcium, I bought some tiny flower pot bottom water catching things (I'm drawing a blank what they're called). They're really shallow earthenware, and the inside is glazed which equates to easy cleaning. They were something like .49 each.