Well what a loaded question. It asked what instruments we play, but not which we play well, or at least with a semblance of knowing what you're doing :)
I've been playing the bass for about a year now, can pluck strings on my husband's electric (which I bought for him at TPC '00), and strum some chords on his acoustic.
My 1.5 year old nephew makes better sounds on our piano.
I can wakeup the kids for school exceedingly well on the trumpet and have been known to alternatingly enchant, amuse and make eardrums bleed at karaoke.