Join in the Christmas spirit by helping Operation Santa Claus and mark the following events in your diary. All of them are in aid of the appeal's beneficiaries. Today: Your last chance to meet Qrio the robot and see the latest Sony products at the Sony Fair, Times Square, from 12.30pm. Free admission. Donations to Operation Santa Claus are welcomed. Today until December 18: Charity auction. View 13 deluxe watches, rings and bags at the fountain area at the Landmark in Central. Then make your bids at the Make-a-Wish Foundation desk. Friday: Challenge Arena at Exchange Square, noon- 3pm, hosted by Hongkong Land. Do battle in a contest of jousting, bungee running and more. Teams must donate $5,000 to compete. To sign up, call Elsie on 2628 3886 or enrol online at www.teambuildingasia.com/operationsanta Sunday: Scavenge Challenge. Join an exciting treasure hunt with family and friends. Prizes include Star Cruise holidays, helicopter rides and dinner at the Peninsula. Registration is $500 per team of four. Enrol online at www.teambuildingasia.com or call David Simpson on 2805 2624. Thursday, December 11: Fun Day, games and crafts, Shung Tak Catholic English College, Yuen Long. Also on December 12. Friday, December 12: Sixth Annual Merrill Lynch/Operation Santa Claus Charity Golf Tournament, to be held at Mission Hills in Shenzhen. Interested corporate teams should contact Katy Lam. Phone 2536 3815. Friday, December 12: Korean International School Pancake Breakfast with Santa and fun fair at 1pm in Sai Wan Ho. Phone 6627 0137. Sunday, December 14: Five-a-side football tournament at Stanley Fort. Plus bouncy castle, face painting, arts and crafts. All fees and funds raised go to the appeal. Contact Brian Crockford on 9836 7840. Sunday, December 14: Santa Hash, hosted by Wan Chai Hash House Harriers, South Island School, starts at 1pm. Contact Deric Probst-Wallace on 9030 4087. Wednesday, December 17: Operation Santa Claus/Gaia dinner, Gaia Ristorante, Central. $1,500 a head. Call 2167 8200. Friday, December 19: Carnival, Tamar Site. Phone 9021 4066.