Gave my TV away in 2006, which leads me to a real what NOT to do: watch TV.
Spend half the time you save learning new skills, the other half you divide up between sleeping and friends. Friends > Netflix. Skills > Netflix. Sleeping is always good because it makes you not wanting to kill whomever is bothering you.
We have a new rule of only watching one thing (episode or video) per night. It's crazy how much easier it is going to sleep when we're tired. Low effort entertainment is just that addictive I guess.