Question: things to do in lake tahoe other than ski?
Answer: Take a gondola/cable car ride. Some of the best views of the lake are quite rightfully from atop the mountains, and there's more than a simple up-and-back ride to enjoy. ... 
Take in a movie. ... 
Drive around the lake. ... 
Browse the art galleries. ... 
Go shopping. ... 
Snowmobile tours. ... 
Ice skating. ... 
Test your luck at the casinos.