I came across The Marshmallow Challenge. This will be a great teambuilding activity that can also be tied into Science. Each team of students are given 20 pieces of uncooked spaghetti, 1 yard of tape, 1 yard of string, and 1 marshmallow. They have 18 minutes to construct a structure using all the supplies. The big rule is that the marshmallow has to be on top!
This is one activity that I'm looking forward to trying out in my classroom!