Cross country skiing & snow shoeing.
Pampering & spa treatments.
There is a very good bus transfer company: Colorado Mountain Express which departs approx. every hour. If you're staying in Beaver Creek (or Vail) everything is central & there are free shuttle buses so there is no need for a car. Book well in advance especially if arriving into Denver on a Fri. night.
Lift passes can also be included in accommodation packages at a cheaper price than buying them at the resorts - so make sure you inquire at the time of booking.
Best Way To Get Around:
Bus transfer, free shuttle buses.