you can shoot patatoe pieces at your sister when your mad at her
Step 1: Push...
push thumbtacks into the container about a centimeter apart
Step 2: Hooking
hook the sparker wires on to the thumbtacks (incredibly sorry about the picture, only a 1 megapixle camers-10 years old)
Step 3: Drill
drill a hole in the bottom
Step 4: Sliding.......
slid the pen base onto the hole in the bottom of the container
Step 5: Finished
the finished spud gun