Here’s a cute option for any Doctor Who fan. A 4 inch tall resin figure of the Doctor’s faithful robotic dog companion. K9 may be best known in classic Who but he has featured in new Who so there should be no excuse.
This little model comes from Entertainment Earth but I doubt they have an exclusive. If you’re finding Christmas shopping for geeks tough then use Google Images, drag the image to the search box (save it first as it may not drag from browser to browser), hit search and find out who else has it in stock.