Lego Xenomporph by Lord Dane. See also: Four-armed sword-wielding demon.
And a few more links:
1. Mad Hatter cosplay and Cheshire Cat jack-o-lantern.
2. Good Fark headline: Bullet hits Lou Dobbs' house, where his wife sleeps and his children play with their toys.
3. Clever costume - - go reverse trick or treating as a moving front door. Via.
*Previously: Alice in Wonderland paper toys.
*Buy Alien toys at eBay.