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Anker Astro E4 external battery pack
Running out of juice after you've forgotten to charge your mobile device can be an utter nuisance -- and sometimes puts real kinks in your daily plans. To combat this problem, buy your student an external battery pack they can use in emergencies.
The Anker charger can charge most smartphones up to six times (with a capacity of 13000mAh) and can provide a majority charge to an iPad. Dual USB ports mean you can charge more than one device at the same time, and LED lights warn you of the charger's remaining capacity.
The Anker is compatible with many devices; including the iPhone 5 -- although you'll need to buy the Lightning Cable -- iPad, iPod, Samsung Galaxy devices, HTC smartphones, the Google Nexus 4 and 7 and LG products.
Price: $45.99 (currently on sale: Usual price $119.99)
If a full charging pack is more than you need, consider "Juice Buddy" -- a lightweight, travel-friendly charger for mobile devices.
It's small enough to fit on your keychain, and you can charge one device at a time through a USB port. The Juice Buddy is compatible with all Apple devices, including the iPhone, iPod Touch and iPad.
Via: Arriba Design
Sony ICDBX132 BX Series 2GB Voice Recorder
When students first appear for their lecture, a common sight is the deposit of dictaphones on the professor's desk. Not only useful to check your notes and for revision purposes, a dictaphone can also be used to give you an audial record of your own notes.
Sony's ICDBX132 BX series 2GB voice recorder is a good bet for a decent price -- and comes with 16 hours of battery life and built-in speakers.
Price: £29.99 ($46)