Puzzles, games, and fun reading!
If you're done with your homework and need to wait for the bus, here are some other things you can do...

Word Games
Games to Learn English
Online Crossword Puzzles

Logic/Math Games
Cool Math Games
Logic Puzzles
Printable Logic Puzzles

Other Awesome Stuff

Brain Bowl (Current Events game)
Teen Ink (you can read stories and poetry by other teens, and also submit your own work!)
Learn to Type!