Here is a car charger that makes a nice gift for Guardians of the Galaxy fans. The Marvel Groot USB Car Charger has 2 USB charging ports (2.1A) and dances when plugged in and turned on. It lets you charge iPhones, iPads, GPS devices, and other gadgets.
This is an officially-licensed Guardians of the Galaxy item. ThinkGeek has it for $39.99.