Here are a few of my outlandish ideas.
1. There is something on Twitter called Twitterchange. Twitchange lets fans bid on an opportunity to interact with their favorite celebrities on Twitter by having those celebrities follow, mention or retweet them.
Each auction lasts about one month and all money is given to a cause selected by a main celebrity spokesperson. Causes are given an extra boost by getting celebrities, and their social networks, involved in the campaign. If you have a favorite celebrity, the Twitchange site will actually help you look him up and petition him (via tweet) to sign up to support the cause. Here is a link that kind of talks about it, but I don't believe it is the main site for this. Is Twitter a Touchdown for Social Good?
I think that Colbi Cailat, a musician, rescued a golden.
2. The Salvation Army has online Kettles that is put on several national stores online sites during the holiday season. Could you do something like that? I suppose it is something like paypal, but it would be cute if you could put it into an object like a tennisball. Maybe some national or local stores like petsmart or petco would be willing to put it on their website. Online Red Kettle - The Salvation Army USA:
3. This one is not that outlandish. Have a 5k run/walk. Have sponsers like dog food companies and dog toy companies or local banks.