I had the students take a piece of paper and fold it in fours and rip them apart. They wrote numbers from 1 to 10 on each of their papers, and crumpled them.
On my call they threw all of their snowballs into the center of the classroom. They again waited for my call to go collect two snowballs each to bring back to their desks.
Then they had to solve for the perimeter and area. Once everyone had solved, we had another snowball fight returning their two snowballs and retrieving two more. I had the students each solve 4 problems.
They loved it!