We did this for one of our Youth’s Christmas Parties. Divide group into teams made up of about 3-5 people. Give them each a couple of cans of Play-Doh (or divide cans up between teams). Have each team come up with their best “snow man”. Have a couple of judges prepared to judge the finished products. You can have one winner or you can make up a couple of categories, such as, “Most Creative” or “Biggest Snow Man”, etc. This works great for groups of 30-40 teens.