You can even personalize the thumb drive by pre-loading it with data such as a collection of her favorite songs or photographs of the magical moments that the two of you have spent together.
A unique choice of tech gifts for girlfriend would be a digital photo frame which she can use to display images of the both of you together. Digital photo frames can even display a slide show of all the photographs stored in it, along with the music of your choice. You can use this feature to create a storyline of all the days that you have spent together as a couple and show your girlfriend how much you treasure this relationship.
You can also give her a pedometer if she is a fitness enthusiast. A pedometer or step counter is an electronic portable device that counts each step taken by a person through detection of motion of the person's hips. There are various types of pedometers available in the market, which are listed in the order of accuracy: piezoelectric accelerometers, a coiled spring mechanism, and a hairspring mechanism. Such a choice of tech gifts for girlfriend is an ideal option irrespective of the occasion.
Then there is the option of buying a USB wall charger if your girlfriend spends lot of her time making business calls on her cell phone. The USB Wall Charger offers a convenient way to charge a mobile device if it is not in close proximity to the computer or dock. It's much easier to use than a computer as you need not wait for the system to start up, and the charging begins immediately once the device is plugged to the wall. One can charge at home, at work, while traveling and just about anywhere one can find a power outlet. This is one of the few tech gifts for girlfriend that she will carry with herself wherever she goes and appreciate you for your thoughtfulness.