This instructable shows how my friend Jared, my brother, and I built a cardboard canoe for his kids to play with in the swimming pool.
-Packing Tape - 1 1/2" - (lots(3 rolls))
-Cardboard - 1 sheet - 40" x 84"
-Utility knife (to cut the patterns out of the cardboard)
-Time (about 3-4 hours start to finish) (Not including CAD/Design/Snack time)