Years ago I made this article about upcycling my kids small plastic animals and other funny thing.
Fairly easy to make yourself – collect a big pile of mini toys that your kids will not miss or will give you permission to reuse. Take the selected frame and place all the figures the way you like — take at picture to remember the “pattern”.
Spray paint all the figures. When dried — glue them to the canvas with a glue gun, and you will end up with a modern art peace to give someone, or put on the wall at the kids room to remember their old toys in a new way and look.