For all of those clueless boyfriends who need to buy their other half a gift. I've done the dirty work and left you with a few options and links!
Big or small, something personalized is always a winner. Avoid electronics unless it's something you know she would like (i.e. option above for a reader). Above all else, just something to show that you care. Cue waterworks.
Some of the best posts come from friends suggestions, (as in this post) so I'm always all ears to your ideas!