For anyone who likes the shake and bake method with the cool whip bowls for doing powder coat, I have a good source for the those kinds of plastic bowls you might want to take a look at.
They have a screw on lid and also translucent so you can see the color through the side. Here are the links:
The lids:
https://www.usplastic.com/catalog/it...x?itemid=91402
The bowls (quart size):
https://www.usplastic.com/catalog/it...x?itemid=29937
There are other sizes but I just got 10 of these in and they work great. It is the Polypropylene part that makes them like the cool whip bowls.
By the way they cost about $3.80 each after shipping and everything for 10 of these so not bad at all.