Only three days left until kids will hit the streets in crazy costumes, looking for candy. We predict you’ll see the usual ghosts, vampires, ballerinas, princesses and tinfoil-covered robots running around, along with a few Batmen, a couple of Harry Potters, and maybe a Transformer or two.

But what if you’re not exactly a kid anymore — except at heart, of course — and you’re looking for the ultimate outfit for a friend’s party? What if you’re taking your kids door to door and want to get into the spirit of the night with a costume of your own?

Maybe you’re looking for something a bit more creative than what you’ll find marked down for quick sale at the drugstore (an hour before you’re supposed to wear it!)

Well, if you’re the least bit Internet or tech-geeky, the Internet has plenty of creative ideas to help you be a Halloween standout.

Check out some of our favorites below:

• A crazy collection of Facebook-inspired costumes (via Mashable)
• Dress up as the Twitter bird! (via Alltop)
• A geeky costume round-up (via Wired)
• Wanna be an iPhone for Halloween? Here’s how! (via Mashable)

And don’t forget to carve a geeky pumpkin for your front porch (via WalYou).

Even the Microsoft Internet Explorer browser gets a tribute:

(And though it’s not Halloween-related, we loved this iPhone wedding cake over at Mashable.)

As you can see, there’s definitely no shortage of great geeky Halloween ideas!

Hope everyone has a great weekend!