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!
great idea for nature table trees from branches, start with dried leaves on them, then paint white and glittery in winter. Put a cardboard circle under the nature table's cloth, with a pin through it, and pin the branch to the pin on top of the cloth.