1 farad worth of storage in a tiny Aerogel capacitor. These are the latest in high-density power capacitors!
Here's a dynamite find! At only 11mm long x 8mm diameter (7/16" x 5/16" dia), these Powerstor Aerogel capacitors holds 1 Farad at 2.5 volts! It only weighs 1 gram (0.035oz), with only 0.4 ohms resistance - quite low. And it can take a 3V surge!