I'm absolutely in LOVE with Krylon FUSION spray paint. We'd bought a couple of cans last year to paint the kids picnic table that we'd bought second hand. It worked wonderfully to bond to the old worn out surface of the table.
This year more cans were bought to use on a 4H project. The project was a model car that my 10 year old had chosen to do black & red. She spray painted the project in the bathtub which worked wonderfully. This paint did not adhere to much other than the plastic we'd been painting. I went thru the tub afterwards and was able to wipe off the excess with a paper towel. Now that's what I call awsome!
It is recommended for use inside & out on most plastics. Can also be used for wood, metal, ceramic, and more.