Mix two batches of cement in the plastic buckets. While the cement is still wet, place a wooden dowel in the center of each bucket. Allow the cement to try, securing the dowels in place.
Set the buckets 6 feet apart. Use a measuring tape to guide your measurement.
Tie one end of a length of rope to the top of one wooden dowel. Pull the rope to the other wooden dowel so that it is taut. Tie the opposite end of the rope to the second wooden dowel.
Drape a king-sized flat sheet over the rope. Pull the sheet so that it is evenly draped on either side of the rope, creating the look of a rudimentary tent.
Pull the sides of the sheet out. Place wooden blocks along the base of the sheet to secure them to the floor and prevent them from falling inward.