I snowboard in the winter.
Orienteer/adventure race in the other seasons (which is my reason to mountain bike).
I used to rockclimb indoors a lot but stopped between tearing my labrum and moved to NYC (Jersey City) where there's no great options nearby to head to on weekdays (also they're f'ing expensive up here). NYC Metro area also hurts me for my mtbing takes a while to get to nearby trails and I don't have my friends to ride with anymore.
Flyboarding looks awesome.
I want to get into speed-flying, i tell everyone that's how I plan to die. (
)