If you're interested, the eBay benefit auctions are running now!
My two pieces are listed here and here. I submitted two of my dot paintings, one of The Tick and the other is a Superman logo. I hope that someone will take them home -- all the money goes to a good cause!
Ryan has also donated some of his original comic art from The Darkness, if you know any comic art collectors. These are pencilled by Michael Broussard and inked by Ryan and are highly collectible and available at a good price! Issue 2, page 11. Issue 4, page 14. Issue 5, page 5.