I've put my Sunny design on CafePress. See it on 76 different products including t-shirts and tank tops, mugs, bags, cushions and fridge magnets.
You can buy any of those via CafePress or try your hand at making your own.
See the how-to here, includes my video tutorial.
Read more in my new book 'iWork for Mac OSX Cookbook' (2012), follow me on Twitter at iworkinpages, like my page I Work in Pages on Facebook and add me to your circles on Google+