My little sister Alex suggest I do a gift guide for a "fan-girl" which really works out to be a gift guide for people buying HER presents... So here it is...
GIFTS FOR THE FANGIRL (or my sister Alex)
Eye of Sauron Jumper (wish this was real... but sadly, it isn't)
Labyrinth Tee (sold out)
Lord Of The Rings Lego
The best place to find even more geeky products are:
Etsy (Just search your desired fandom)
Jinx (Lots of video game related merchandise, as well as TV/Film)