[ I pilfer shamelessly from others ]
So, I am grateful to those who share their time and talent, and recognize them below (with the concomitant acknowledgement that the open culture movement is bound up with cultural capital and, as such, not everyone is "free to contribute"):
The ASCII text-art headers are generated by Patrick Gillespie's fantastic web app, Text to ASCII Art Generator, with some very slight modifications. He also developed the equally rad Old School Gaming Filter that I've used on photographs which appear on the website.
Numerous public domain graphics have served as the basis for various designs on the website: