I did a benefit for my kitty Moon-Pie's surgery costs when I was a poor working college student. I printed invitations with her picture on the front, and cooked for three days delicious appetizers and desserts. Friends and co-workers came and donated what they could (to a designated friend), and we raised the money! Everyone had a great time, with good company, good food, and a good cause. I made and sent out a little booklet that contained all the recipes as a thank you.
I'm sending some good thoughts for you and your kitty.