Walk on a challenging surface which may be (but not limited to): beach wet sand; beach dry sand; gravel; grass/turf; beauty bark (e.g. in garden); dirt (e.g. in garden); etc. The seated option is get two boxes (e.g. the size of a shoe box). One is empty and the other has 10 marbles. With your right foot (box of marbles on your right side on the floor), roll those marbles around. Then try to pick up each marble using your foot/toes and put the marble in the other box (empty). When you’re done with the right foot, do it with your left foot.