Just picked up longboarding, super fun and actually quite easy as long as you commit and aren't afraid to have a few spills. I got coleman slides within 20 minutes of riding, and in 5 days of riding I can commfortably ride at 20mph+ and do 30 foot slides, and do pendys to speed check. Next for me is toeside slides and stand ups. Highly recommend it, great way to kill a couple hours whenever you're board.
And then there's the classic tramp sesh, golfing, fishing, swimming, hanging with friends.