There is nothing much to do in Aspen other than Ski and enjoy the views. The whole town can be pretty much walked in 30 mins flat. If you are into hiking, you could go for the numerous Trails like Hunter Creek and Rio Grande. I also did day trips to Glen Wood Springs and swam in the pool as well as went up to Aspen Snow mass. You could also watch movies in the one and only Theatre in town and enjoy the cuisines so many different restaurant's have to offer.