So, I decided to try my hand at a simple ad for the t-shirts. If you're so inclined, you can download the original size, print it out, and post it wherever you like. (Which I would seriously appreciate. It's hard to figure out ways to advertise this stuff.) I also made the frog into a shirt for purchase, which you can find here.
And poor Abraham Lincoln felt the wrath of my desire to draw a distorted face.