I've used with Brownies (Canada: 6-9 years)(the old nutrition badge)
On a paper plate, the girls draw a nutritious picnic lunch (here could go your fruits and vegetables).
Using a small piece of construction paper, cut out the body of an ant. (We had some very creative ants) Push 3 paper fasteners through the "ant body" and spread the ends to form "legs".
By moving a magnet under the paper plate, the ant can visit your picnic.
The girls really enjoyed moving their ants around!