Air forts also have a green side. The fort uses very little air so it does not take a large fan to keep it inflated. The low power fan keeps the fort very cold. It is almost like a mini air conditioned room.
Step 1: Supplies
A sheet larger than your bed(I use a sheet from my parents bed).
Clamps(to attach blankets to the bed).
Tape(duck tape or packing tape work best).
You do not need the bed or clamps if you don't have them. I recommend using a bed because it is easier but if you want you could just tape the sheet to the floor.
Step 2: Step 1...The First Real Step
Step 3: Tape!
After you attach your sheet turn on the fan. The fort should inflate a little.
At this point you should have the sheet only attached to the fan and the fan turned on.
Step 4: Leaks...
Step 5: Almost Done! Step 4
Undo one of your clamps. Instead of attaching the clamp to the bed just attach it to the sheet. The weight of the clamp will hold the sheet down.
If anything was unclear just let me know.