The Deja Vu bag, co-created by DMI graduate student Nicole Tariverdian, boasts an RFID system that helps you to remember important items like your wallet, keys, and cell phone.
A video demo of the bag is here. Just attach custom RFID tags to your objects, turn on the bag, and you’re all set. The bag will automatically scan items as they enter and leave, keeping track of what’s inside. A simple squeeze of the soft button and the LED display will light up to show which items are accounted for.