Take the group out in the woods, or anywhere suitable. Make sure you have 3 coffee tin cans that are strong and sturdy as well as two boards roughly 4 feet long and half a feet wide. Set down two ropes about 10 to 12 feet apart. The object is to get everyone on the boards or cans at the same time and then to get everyone off successfully without anyone falling off and touching the ground with their feet – or else they fall in to the imaginary “acid river.” If one person falls off, the whole group has to start over. This activity will build communication skills, leadership skills and fellowship skills.