Sure, Why Not?: The Enter Doorbell
The Enterbell is just that, an Enter key doorbell. Pretty straightforward. No ess curves required to understand this one. Unfortunately, it's currently only a concept created by Li Jianye. Wait a minute -- a concept? How hard is it to glue an Enter key to a regular freaking doorbell? Not very if you don't glue your hand down your pants first (I'm typing one-handed). Seriously though, if you want an Enter doorbell, don't wait for Li, just yank a key of your choice off a coworker's keyboard and glue that puppy on. Enter key alternatives include 'Home' and 'Insert'. Or, if you're not into the whole technology thing, you could just hang a sweet knocker. Knock knock. Who's there? Enter. Enter who? Me from behind, I'm feeling kinky!
Geeky Doorbell Speaks For Itself [ohgizmo]