Ask the group to stand on an 8'x8' "magic carpet" (tarp or paper). The entire group must be on the tarp completely.
Once everyone is settled, advise the group that they are going on a magic carpet ride. Tell them that they have rised 100 feet in the air and are ready to go.
Unfortunately, the instructions on how to steer and land the carpet are on the other side of the carpet. So, they must flip the carpet over while standing on it.