1: Brainstorm a list of stuff to do
2: Get a new game or play old games again
3: Discuss things on forums
4: Draw
5: Write a review for the Escapist
6: Study something interesting like film, technology or whatever you like. Studying can be fun in the right context.
7: Rickrol... oh god NO! Not the scary hammer! *cowers*
8: Read a book. Depending on how fast you read, books take a bit more time off your hands.
9: Youtube
10: Write a story or list ideas
believe me, there are lots of things to do. Here's something I found
http://www.bored.com/