Dude really is vital to carry at least some tools, well, or at least banal opener, so if we are reading a woman (which is not recommended) then suggest that she buy her man here is a keychain multitool.
This keychain is very small, but the strength of its steel and the strength of the Assembly of all components will allow you to use it even for something more serious than a change of graphics card. Before us Dime Micro Multi-Tool — especially small multitool.
Under this case? A lot, dude — 10 components! So this is the pliers, a very sharp blade, knife for paper, tweezers, scissors, flat screwdriver, Phillips screwdriver, file, bottle opener.
The weight of all this splendour, 36 grams. To buy such useful in the economy thing is 20 dollars in the online store of Goodies www.thinkgeek.com