Me, personally, I love electric guitars. Preferably Gibson or Fender (or, for thrash metal, Dean or Jackson!). I love how many different sounds you can get by just sitting around and bending strings or trying unofficial chords (WEIRD sounding stuff. I also like how you can totally change the sound the guitar makes using distortion boxes and various PC software programs.
Lol something I love to do, especially if exact tuning doesn't matter because I'm about to re-tune the guitar, is to tune down the strings so much that the strings are completely slack, then try to play a song! It's hard to get any sound out of the guitar then (aside from a demonic sounding tune)