While I have some large headphones at home, I always carry earbuds with me because they are just so small and convenient. This new earbud adapter is supposed to expand the usefulness of earbuds, allowing them to become headphones.
These Ear Adapters were created by the Chilean-born, Paris-based designer JC Karich, and allow users to transform earbuds into over-the-ear headphones. This means that you can take your earbuds on the go, and when you want the stability or looks of headphones you can have them easily enough.
The whole thing is 3D-printed and even comes with cushioning. If you like the design, you can freely download the schematics from Thingiverse and print them out on a 3D printer.