[header] How to use coinstar to donate to charity [title] Collect change from around your home and car. [step] Some common places where loose coins collect include between cushions of furniture, under the seats of your car, in pockets, in trays near the washing machine and the bottoms of purses and change purses. [title] Clean the change if it is dirty at all. 
[step] Coin machines often miss dirty coins; cleaning it ensures it all gets counted and doesn't stick together in the coinstar machine. Usually just soaking coins in water for several minutes or overnight will clean it enough to be accepted.