Try to sleep: ok the obvious, try a glass of warm milk, sleepy time tea, or reading a really boring book. Counting sheep may not work, but have you tried soothing music?
Write a book: anyone can write a book, after you’ve finished you can spend weeks of sleepless nights trying to get it published.
Read things no one else reads: like the dictionary, cover to cover, and the Encyclopedias. After that Wikipedia articles on random topics. Or pick an author and read everything they’ve ever written. Think popular authors here like Stephen King, Anne Rice, William Shakespeare, Peter Straub, etc.
Play free online flash games: I recommend Immortal Nights, and Kongregate.com. You could also try popcap.com or armorgames.com. There are lots of free sights out there; do a Google search to find more.
Rearrange the furniture: assuming of course that no one else is sleeping in the bed you are trying to move.
Drink: Alcohol makes everything more exciting, provided you don’t have school or work in the morning.
Create your own recipes using random ingredients in the kitchen: Sometimes you actually end up with a good one, just don’t forget to write it down.
Paint a masterpiece: If you don’t have paints, use sharpies, crayons, pens, food coloring, or whatever you do have.
Create another Blog: You can never have too many blog profiles right?
Go on 4chan or chat roulette: the randomness could keep you entertained for hours on end.
Redecorate your wardrobe: Cut things up, sew things together, ad patches and pins galore, and don’t forget to replace all those missing buttons.
Dye your hair: Hey, it takes a while and you actually have something to show for it.
Write for Associated Content: yeah I know cliché.
Create fortunes for fortune cookies and hide them in the buckets of leftovers in the fridge.
Take a hot bath: bubbles are optional of course.
Annoy your local DJ: DJ’s get bored at night too, call up the closest radio station and complain that you can’t sleep. He or She will doubtlessly have something for you to do.
Alphabetize everything in the house: or order by color, genre, etc.
Learn XHTML: A very useful skill that will allow you to create your own blog site.
Make a card mansion: card houses are easy, but card mansions complete with swimming pools are a bit harder.
Write letters to your neighbors: How surprised will they be when they wake to find a lovely anonymous letter under the door or on the porch wishing them a happy day.
Write a comedy routine: Even if it’s a bad one.
Invent your own language: replace every word in the dictionary with one of your own, and then memorize it.
Try out ideas for new tattoos with eyeliner: Lucky for us insomniacs, eyeliner now comes in a billion colors.
Write to your senator: Everyone has an opinion, voice yours.
Apply for an overnight job. I mean, you can’t sleep anyway right?
Become a faithful star watcher. Or a faithful Star Wars watcher.
Research lesser known countries: you’ll be the only person who knows where Timbuktu is located.
Become an activist: Pick a good cause, any good cause.
Learn to do magic tricks: Maybe you will learn to put yourself to sleep.
Listen to old radio shows online: I recommend Gunsmoke, and the Invisible Man.
Enroll in online night school: An extra degree never hurt anybody.
Turn the television to the Spanish channel and guess what they are saying: You’ll be shocked to learn that you understand more and more Spanish.
Learn to speak an odd language: Perhaps Russian or Swahili. You could work for the CIA some day.
Cross dress: Why not? No one else is awake to see it.
Create your own cult online: A group of people that worship Mountain Dew was going to pop up sooner or later.
Customize your desktop: Probably for the hundredth time.
Learn how to torrent movies: because knowing how is not illegal.
Learn how to hack: Responsibly of course.
Play World of Warcraft: once you start playing you’ll forget all about this list.
Study Quantum Mechanics: Just because it sounds so smart and nifty.
Create outfits out of duct tape: Classic. Just make sure to double side everything.
Call back telemarketers: If they answer, try to sell them sleeping pills.
Create a village using toothpicks and tin foil: oh, to be god!
Find typos on household objects and write to the companies: Some of them will send you free products of at least a thank you note.
Spin around in circles until you fall down: or until you puke whichever comes first.
Take up meditation: it might even help you sleep.
Play chess against yourself: who will win?
Talk to bots online: they are getting better and better.
Make a collage out of pin tacks: They come in so many colors and shapes.
Paper Mache: The possibilities are endless.
Write to all your relatives: you know you should do it more often. Why not now?
Go looking for other insomniacs: You can’t possibly believe you are the only one.
Get a cat: They only sleep during the day. At night it is their mission to wake you up.
Adopt a baby: They will wake you up every ten minutes until you have to sleep.
Go to 7-Eleven: ask the attendant weird questions all night.
Learn to read upside down: It could come in handy if you are ever kidnapped and hung upside down.
Live the entire night with a blindfold on: Perhaps it will help you learn to use the Force.
Watch movies backwards: it’s a whole new story!
Become a Dungeon Master: There is no end to the worlds you can create.
Study the law: There’s a lot more to learn than you realize.
Invent useful household objects: You might even be able to sale your ideas.
Work out: You don’t need a gym. You can use heavy books, chairs, doorways, you name it.
Create your own energy drink: You can’t sleep anyway right?
Create a home remedy to fall asleep: If you’ve done everything else on this list and manage to find one that works, share it with the world. It may be the best sleeping remedy ever created.