For older kids who've been there and done that, finding a surefire party activity can be a challenge. Room parent Kristin Klinger of Indianapolis, whose son, Joshua, loves a good joke, came up with a genuinely funny idea for his classroom parties. She and her fellow room parents print a slew of silly jokes and riddles off the Internet. On party day, they toss the jokes -- one per strip of paper -- into a hat and ask each child to read one aloud. "They have so much fun laughing at the jokes -- and at themselves," says Kristin. Lisa Mason, a room parent in Monroe Township, New Jersey, always equips herself with jokes, brainteasers, riddles, and simple math and magic tricks before heading into the classroom. If an activity ends earlier than planned or boredom strikes, she has a ready supply of diversions. For age-appropriate humor, check out Yahooligans at www.yahooligans.yahoo. com/content/jokes or Kids' Turn Central at www.kidsturncentral.com/jokes.htm