Grab your board, kayak, friends and a costume, and launch into the Grit City Costume Paddle! 12-2pm Oct. 31 at the Foss Waterway Seaport, Tacoma. Costume contest, raffle prizes, Trash-for-Treat litter pick-up, the Trashoctopus, music, food trucks and Halloween-in-the-Museum! All ages & free. What more do you need to kick off a weirdly wacky, watery Halloween?!