I bought a kids plate and bowl for the toddler (melamine or other sturdy plastic). Lasted through 2 kids and will go to grandkids. Just 1 cup and 1 plate. Like this one (was a gift, actually)..
http://www.ebay.com/itm/351904636680?rmvSB=trueNot everyone need melamine!
Eventually, i was tired of replacing our family everyday stoneware dishes due to dishwasher breakage and accidents from kids age 5-16 years loading on their own. I eventually bought corelle (tempered glass) dishes in all white.
You can get these at walmart, lower cost home stores, and I think ikea even has / had a version.
http://www.ikea.com/ca/en/catalog/products/10319390/Although not melamine, the durablity is much greater than stoneware, especially once kids are not throwing the plates on the floor. oh, and $2.50 for a bowl.
I never knew williams sonoma did sell this sort of thing... but -- what the heck are you doing looking at williams sonoma, anyway? Isn't that like going to a mercedes dealership and "trying out" new vehicles? :-)