Set out paintbrushes. Ask your child what painting canvas they'd like to paint on. For example, give them a few options such as paper, wood, wooden art, old toys they no longer play with, etc. Sit down to play with your child and start painting. Mix colors to identify new ones and count how many brushes are there. This will teach your child counting, how to make new colors out of currently available colors, that it is okay to explore and do things differently.