Dragonfly has been happy to do it the last 2 years. We had pretty standard stuff in there originally and someone suggested we change the images as the prize and it was a popular choice. Winner gets the icon, 2nd gets the sidebar banner, and the final 4 get on the community banner.
I encourage you to support your local groups, so that keeps me (or someone pretending to be me) aking you for money, plus they are your wild animals and I think we should all support our local rehabbers. It is tough physical, mental, and often just plain icky work, and nobody gets any public money so all these programs are funded totally by people like us.
We didn't get many owls this year, more hawks, but even for the handful of owls we do get, it costs a couple $ a day to feed them. The larger rodents/chicks they need can be up to $2 each, plus tons of cleaning supplies and medical tools, housing, and the heating cooling bills, it all adds up too quickly. If you are lucky enough to have a local rehab (many places arent served by anyone within a few hours drive in some parts of America) they should be who you go to because they're making sure your community is being served. Most rehabs don't make it more than a year or 2 because it is so time consuming and expensive.
If you do want to donate to the clinic I work at, or just to see where I pitch in: Aark Wildlife