Fun little thing that I do is I play midis and use them as backing tracks. For any various song. Doesn't matter what song, just so long as I know what key it's in. Midis rock.
The Gods Made Heavy Metal, And They Saw That It Was Good
They Said To Play It Louder Than Hell, We Promised That We Would
Hulk Smash!!
Whatever you do, don't eat limes. A friend of mine ate a lime once and BAM!! Two years later. Herpes.