Skippy lends itself to creative further investigations, races, and design challenges.
Can you make Skippy stand still, go in a straight line, or go in a circle? What happens if you change the length of Skippy’s legs, or make a Skippy with only three legs, two legs, or one leg? Does reversing the direction of the motor’s spin affect performance?
You can also try changing the location of the hole in the bottle cap, or attach additional mass by drilling a hole in the outer wall of the cap and attaching a small screw. (See the “optional” items in the Materials section.) How does this affect Skippy’s motion?
For a personalized and artistic touch, decorate your Skippy. Replace its legs with markers and see what patterns it traces.
Skippy has been compared to a bug or a robot. Look up the definition of these two things and decide for yourself: Does Skippy qualify as either? Why or why not?