Although this activity may be for older students, I think it could be modified for younger learners as well. This activity is very basic, but would give all students a chance to be creative. Students have to find a way to make their individual plane go farther than anyone else's plane. Students can use any material they can think of, and make an airplane in anyway they can think of.
These Billion Dollar Buttery Biscuits are super easy to make, and they're the best buttery biscuits ever. They're also known at 7Up Biscuits, but Buttery Biscuits is a better description. Recipe from RecipeBoy.com