Soon you'll be able to order prints and t-shirts and buttons and stickers and magnets and knitted booties and wicker chairs and..... well....uh...maybe not quite that far. Ahem. But at least those first five things I mentioned!
You'll be able to order right here on the site and they will be carrier-pigeoned directly to your treehouse!
UPDATE (May 25th, 2009): I have a bunch of t-shirt designs kicking around, and am going to get those available for purchase ASAP, and also I am working on finishing a book which will be a compilation of all the scratch comics up to and including chapter 4, which will also be available soon!