Built-In Drawers between wall studs. Imagine how much space you could save w/out dressers!
Biometric keyless locks let you unlock or lock your entry door with just a quick scan of your fingerprint. This looks awesome, but I think I've watched too many crime shows where they cut off someone's finger to bypass a biometric system. I might be too scared to install one. :)
Toe kick kitchen drawers. Make use of the wasted space under your kitchen cabinets! A how-to description on how to build them. LOVE THIS IDEA! Not necessarily just for kitchen.