Here are some ideas for earning the Feet badge. Some activities are designed to be done in a patrol or unit, others are designed to be done at home.
Suggestions have been split into ideas for Guides aged under 10 and Guides aged over 10, but feel free to mix and match - as long as it is a challenge for the individual girl!
Do a drawing, and write your name on it, using a pencil held in your feet.
Find a partner and take turns giving each other foot massages. There are some ideas on this website. You also might want to paint each other's toenails when you are done.