Many Colorado resorts offer tubing hills, which is guaranteed fun for kids and adults. They're typically set up somewhere near the slopes and many have a Magic Carpet to get you to the top quicker. Of the tubing hills my family has tested, Copper continues to rule as the longest, with the most variety, guaranteed to provide the most screams and smiles. The Magic Carpet makes it easy, and you pay for an hour of fun, which is plenty. Four different tubing lanes let you pick the speed and level of excitement. Some lanes have jumps to catch air. You can tube down in a train or solo. The tubing dudes running the hill will spin you if you want. You and your kids must be 36 inches tall. They recommend you dress warmly and wear comfortable winter boots. But on the afternoon we were there, we stripped down to T-shirts and soaked in the sunshine. Copper's tubing hill is in the East Village, at the base of the Super Bee. It's open form ten in the morning until eight at night. For details or reservations, call 866-416-9874. Keystone offers a new and improved tubing hill with a new lift. You can tube seven days a week until 8:00 at night, through March 30. Call 970-496-4FUN for hours and prices. Reservations are recommended. The tubing hill in Steamboat has moved into town on the slopes of Howelsen Hill, which is open through the end of the month. Proceeds benefit the athletes of the Steamboat Springs Winter Sports Club. The number to call for info is 970-819-8010.