To make my space inspring, I have an "Abbey Road" road sign hanging over my desk. I'm a pretty big Beatles fan and Abbey Road is my favorite album of theirs. I also have a poster on the wall with Jimmy Page, Bob Marley, Jimi Hendrix, and Pete Townsend on it that I got for free from Musician's Friend.
I've never played through a stack before...just combo amps. The rehearsal space we will be using in a couple of weeks has 2 - a Marshall and a Crate. They aren't equipped with tube heads, but they are stacks with 4x12 cabs! That should be interesting :-).