I have this nagging desire to build a completely useless piece of archaic technology using modern tools. A memory delay line. I would love to use fiber optics but and electrical wire works too. Obviously it would have to be really long to fit any significant number of bits in it, and even then it would be on the order of hundreds or thousands of bits. But the idea of storing memory as signals moving near the speed of light just tickles me pink.

@freemo Go really oldschool and make it with mercury. If you go as mad as a hatter, that is a risk I'm willing to take.