It's worth mentioning that Cool Hunting (http/www.coolhunting.com/#buy) and Story have a gift guide featuring some truly incredible 3d printed gifts. Many are quite expensive, especially those by Art In The Age Of (www.artintheageof.com) but very unique and collectible.
These are some great ideas for Christmas and holiday gifts! I'll probably look into printing that pocket clip for my fitbit. Check out some of the other stuff I'm planning on 3D-printing for the holidays http/bit.ly/3Dgiftguide1B