School of the Wild maybe? Leaf rubbings are a good excuse to go outside, but you can't always find dropped leaves all year round! Use a laminator and a metal ring to create leaf rubbing plates that can be used all year long, over and over again!
Montessori Art Activities for 2 Year Olds. Like the idea of setting up three different trays, opeing up the art cupboard and being able to choose anything or everything gets overwhelming and messy. Need to get more organised.