Get local businesses to donate boxes (big enough for large people to crawl through)and purchase box tape for around $100 dollars and build a giant maze in a donated warehouse. It takes around 3 or more days to build depending on experience. You will need box cuters, tape, box fans, tables, and knee pads to rent out. You create a giant maze people crawl through. Charge around $5-$10 and discounts for groups. We raised over $1700 dollars doing it. IT IS ALSO FUN FUN FUN!