H.W.
Just a head's up.... microwaving plastic is a big no-no--you can do a google search on why it's bad, but just saying... we re-heat in stoneware/ceramic/glass and then transfer the food to plastic when he was using those dishes.
We found some cute dishes for Kiddo from Crocodile Creek. "Good" plastic, top rack dishwasher safe. They have some super-cute dinnerware sets too.
http://store.crocodilecreek.com/c/dinnerware