With the basement almost finished, I'm going to mod the classic minis I picked up (NES, Genesis, SuperNES). I don't need them to play 800 games, but they're missing some stuff I'd like to be able to pull up. As much as I like the genesis mini so far, how do you not have BattleToads/Double Dragon and the like.
Also, just picked up and built two Arcade1Up machines. Honestly for the price...these are pretty frickin sweet. Got SF2 and Mortal Kombat (Costco bundle for the MK machine included a light up marquee, custom riser and stool). Waiting to see if they announce any new releases at ComicCon, and if one of those will happen to be a WWE cabinet, otherwise I'm going to pick up the TNMT cabinet they just came out with, re-design the outside to look like the old WWF Superstars cabinet and mod it with a retropie to play the old classics like Simpsons, Sunset Riders X-Men, NBA Jam, and of course Superstars/Wrestlefest.
Are they the authentic machines? Of course not given the price point, but they seem to be built well, and they look cool as excrement. Plus the 9 year old in me is going insane that I'm going to have essentially a mini-arcade in the basement.