Head to P.S. 15 in Red Hook for a day of carnival activities ($2), t-shirt decorating ($4), a bounce house ($3) and more. Catch cool juggling shows, get your picture taken with a Star Wars character, munch on snacks and shop for treasures at the P.S. 15 PTA flea market. Proceeds benefit Puppetry Arts. Don't delay—the first 100 kids get a free goodie bag. All ages.