I was going to suggest a Yard sale and phoning the media but I see it already has been suggested. What about setting up a booth somewhere were there is alot people and ask for donations? Do you have a cat show in your area in the near future? Alot of groups get a booth at the cat shows and get donations there. I can't think of anything else right now but if I do I will be sure to let you know. I do have an idea that a local group use to do here but it isn't a quick fix. The made a calender of peoples pets, they picked 12 out of all the entires they would get and then made a calencer and sold it. They did really well with it. Buit that wouyld take awhile to organize and get it done.
Melissa