I've been toying with the idea of providing these mini messaging dot matrix devices that will basically accommodate any machine with 6.3V AC power via one of the GI lamp sockets. It provides animated text that can be entered into the device via your PC. It turns on when your pin machine is turned on, off when your machine is off, and remembers your settings. Has brightness and speed settings. Can scroll text in various directions, do some very basic graphics, and do some basic gif animations. Target price of $24.95. 3.5 x 1 inch (9 x 2.5 cm). You can for example have it flash famous call out quotes like "LIONMAN!" or "Destroy Centaur..." etc. Or it can scroll game rules..what ever you want. Can mount in various positions within your machine. See enclosed pic and video. Let me know if this is something you'd be interested in. I have a few samples made up.