If you have a half decent imaging program, they're fairly simple to make.
First, right-click on your avatar (or a dream avatar from tektek) and your orphan,(seperately, of course) and save them to your computer. Once you do that you create a blank canvas of the size and color you like. Then just paste in the avatar and orphan, add text and border, and voila! you've got a cute little reminder of the event.
smile 
I wish that I had saved all of the orphans. I'd make them for anyone who wanted one, FREE!
*EDIT*I managed to collect all of the orphan photos! If you describe your orphan, I'll happily make a banner for you.
smile