This was an assignment in a high school physics class.
Build a cardboard canoe.
Rules:1. You could only use cardboard and elmer's glue.
2. The boat had to do two laps (down and back) in the school's swimming pool.
What a fun project!
I would totally allow people to use tape...never underestimate the power of a good strong tape.
Here are some pictures I found of similar challenges: