I've done 2 different ideas.
1. This is a large choice of 'handwriting' fonts. As fanfic is all about writing I though one idea would be to base the t-shirt on 'writing'. If we wanted to go with this, then once the font was chosen we could come up with some further ideas. - Typewriter, quill and ink, etc.
2. Alternatively I thought we could try to appeal to quite a few fandoms. I've included the Superman font, Star Trek and Buffy. The the bottom half is the LnC logo.
At the moment this is very basic and put together in a rush.