I am all over the map - anywhere from Gaga to Keb' Mo' but tend to mostly listen to blues/jazz and classic rock. I have been scouring for a good quality DMB before these crowded streets for awhile now but I just can't justify spending $400, yet.
I collect Mass transit passes/cards. It just kinda started as I travel more and more for work and found lots of times Mass transit is easier to get around and less stressful than a rental car plus you get to meet locals. Last count I think it was up to about 23.
The other thing I collect are vinyl records - love the sound so much better than CD.