From every destination, I buy a magnet (you know the ones we put in the fridge) that is strongly connected to that destination. Now for a guy that has been to several Greek Islands, (_{and not only}), you can understand that buying something special matters, something unique!

Is there any place that sells (special/nice/beautiful/distinctive) magnets in San Francisco?

For example, from Monaco I bought a magnet that was like a wall-frame, and my mother found it marvelous! I really want to bring her one that she will find special..

A negative answer would be also accepted (i.e. that every store that sells souvenirs is pretty much the same for magnets).