Bling Bling, M-fers. I sell them to the little kids at the park in the summer for $1 more than I paid for them. They make awesome little squirt-guns. You gotta be thinking homies, Im gettin paid....
Seriously, pull the plunger out put the needle in the barrel backwards and replace plunger and press it until it jams. Every so often I run them to a place that you are suppose to. If anyone ask, and they dont, tell them you use them to refill ink cartridges for printers.