I'm 23 and over the last 29 months i've come up with a bunch of ways to keep away from the computer!

-bird feeder. Picked one up at the dollar store and I have 20 birds that visit me everyday and I have learned all kinds of backyard bird species!
-learn to make bread/crackers. Really easy to do and tastes delicious!
-Paint. I am an awful painter but i've been learning for about a year now and there has been some improvement! I picked up all my supplies again at the dollar store
-Nice walks are always good for the brain
-I really like taking photographs so I bring a little camera around and photograph mushrooms and things of that nature.
-knitting: i've been learning to knit too! not very good at it but it will be nice once I get better!

There is a few ideas that I found have helped me spend my time wisely. Also got a membership (15 bucks) to the local botanical gardens for a place to go thats usually quiet and for a change of scenery