Going live in about 40 minutes to give people a look at my homebrew CPU, System/1, and even (deities of the live demo permitting) show it running something boringly trivial.
I think this'll be the first time I've shown it in public when it's running interactively, so if that sounds interesting - or you just like watching live demos go up in flames - it'll be at https://twitch.tv/baljemmett from 1800 BST.