I would also add foraging to the list - there are just tons of cool things to see in the woods. In NJ right now the chanterelles have been popping for the past fortnight. DW and I took the DD to the woods to gather some and we also checked out a Southern Leopard Frog and found the skull of a young spike buck (an NJ eleven pointer - LOL) which we also brought home.

Become what you are