This idea appeared in the December issue of Guiding.  We liked it so much that we thought we would share it with others.

For each group, you will need: a packet of jelly babies; a packet of marshmallows; a pack of cocktail sticks.

See which group can built the tallest tower from what you have given them.

Give double the quantities if it looks like the team is going to run out of time before they have finished.