So, here they are. Two designs, courtesy of my sister Grace (who was a regular member here a long time ago
The goal here was to create the "feel" of the site design, but in a simplified, flatter way that would translate well onto shirts and mugs, since the general shape of the logo as-is isn't a great fit for it, both in terms of the specificity of detail (gradients, transparency) and the general shape. I think the first option looks more like a typical shirt design, but the second looks a little closer to the actual logo, and since I liked both, I wanted to give people the option.
I'll upload a photo of me in the test shirt (which is of the first design). It's a little darker (and with less transparency), both things tweaked for this final version, but it'll give you a basic idea of the size/scale.
I should be able to offer a few different options for the back, like slogans, the URL, or both. By default, I was just going to do something like this:
I think shirts and mugs are the givens, though Vistaprint offers a lot of other products if anyone wants either design on something else.