I buy every single console I can find on amazon, ebay, whatever, buy a troutload of old authentic arcade cabinets, and every accessory and game I can find for everything.

I'd probably throw a decent chunk at some indie games on Kickstarter as well, upgrade my Tides of Numenera pledge and stuff.

e; oh and I'd buy a couple of really really hi-end bleeding edge PCs as well for me and Pike