I've loved the Silicon Gaming Odyssey platform since it came out back in 1999. The first slot with a 16:9 display and rendered 3D graphics. I managed to score one for home a few years later and have now become the unofficial worldwide expert on them. I have a number of them and sell them on occasion. http://odyssey.robertwinter.com
Being the Elvira fan that I am, I have a working Elvira's Secret slot next to my pins.
I'm also fortunate enough to have an Elvira topper and bonus wheel from the first Elvira Mistress of the Dark slot. It's a static display I modified so the wheel slowly spins, the spider web over the wheel cycles colors, the torches flicker and the Elvira sculpt was custom painted. Sadly, a complete fully working EMOTD machine is impossible to find.
I also just picked up a Game King that I will probably convert to Munsters at some point.