Gadgets for travellers (?)

Are you looking for a gift for your fellow traveller? You need something that makes your life easier (not sure if it is right word :)) while you are staying in hostel... or just love gadgets. 

Sometimes I am wondering is it genius or just madness. 

1) Anti-Theft Lunch Bag are zipper bags that have green splotches printed on both sides, making your freshly prepared lunch look spoiled.