Yay, the two Vecboys that I wanted to make are finished. Now if one breaks, I can always use the other to do a demo... or I can have twice as many people on the Hackaday Supercon enjoy a classic 1983 Vectrex game.
(In the picture: a black and a red Vecboy, which embed a flat CRT but otherwise is in the shape of a chunky GameBoy. Also pictured, a diminuitive-looking GameBoy Color.)