Here is a goal: Seal the ends of a plastic drinking straw.

How would you accomplish this goal?

pick from the following.
A). Take a paper napkin and tear a three inch square from it. Wad that up and get it wet. Make a ball of the square and jam that into the end of the straw..
B). Hold one end in the fire provided by a small candle. Heat it but do not let it catch fire. Remove from the heat and squish with a pliers. The plastic should be soft enough to melt together..
B).