Snow Leopard won't run on it; as far as I can tell, it's running Leopard anyway which is the latest OS for PowerPC Macs.
Anyway, my current setup:
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My 13-inch MacBook Pro (Late 2011) with 8GB RAM and 256GB SSD, set in a Twelve South BookArc and connected to the 23-inch LG IPS237L (as is my XBOX 360, which isn't pictured but located on top of the cabinet next to the Mac). There's also a Twelve South BassJump and 1TB Time Capsule next to the display.
On the right, there's my iPad (4th gen) 32GB Wi-Fi with a modded "tan" Smart Cover, my woodskinned Moto G (2013) and my iPod nano (6th gen) which I'm using as a watch until my Moto 360 arrives.