A rummage or yard sale. My group is out of a church, so we are going to ask for donations of items, man the tables ourselves, hold the sale at the parking lot of the church and sell. Any items not sold we will donate to salvation army or goodwill.

Change jar. I have a change jar at home (and at work). All the change I collect will go into my fund, it may not be much, but it could add up over time. The one on my desk is sitting next to a jar of candy.