New York-based design studio CW&T has made available a hundred lamp designs that anyone can download and 3D-print at home (or just buy pre-printed from their store).

Need an institutional, granpa-safe present? Go for the classic: a money clip! Forget silver and gold, and go for a bright plastic filament.

If a money clip isn’t enough, then go for a full 3D-printed smart wallet like this one. It sports a compartment for 5 cards and has room for coins, paper money, or other small flat items (like SD cards), along with a simple self-locking mechanism. 

The dot is a coat hanger that doubles as keys holder. It can be printed in various sizes and colors, so that you can actually come up with a proper composition that will fit perfectly on your hipster friends’ walls.

Another classic gift that any aunt or grandma will certainly cherish: a big, nice, hand-painted Christmas ball or  another Christmas Tree decoration! Print it with your 3D-printer and then decorate it with the colors the person receiving the gift might like the most. 

A bit more expensive than the other items on this list, a 3D-printed 3D-printer is the perfect self-replicating gift that keeps on giving. There’s a few option around, but the best and probably most famous one is RepRap. 
You can download the schematics (and a list of the non-printable parts you’ll have to buy separately) on the project’s website.