Nature Memory Game!
This is traditionally called, "Kim's Game."
You need a partner to play it.
Gather a selection of outdoor items e.g. a leaf, a stone, a flower etc. and lay them out in front of you.
Ask your partner to look at them for a minute and then cover their eyes while you remove an item and hide it behind your back.
They must guess which item is missing!
Have a few turns.
Then swap. You look at the items for a minute and your partner hides one for you to guess! Have a few turns.
Keep score! Can you beat your partner?