After looking at a few custom projects, I noticed that people had gone with using an IEC socket.

It takes the standard power cables used with most (if not all) PC’s. It also includes a fuse. It was pretty cheap (under $8) and I -think- will be the best option for me. Ideally, I want the one switch (this one) to power on the entire cab (board, monitor, fans, marquee, etc) and this switch seems to be capable of this. Now I’m off to do some more research on just how to wire this up to do just that.