Bottle clip

This is a very simple and small clip that will aid you in carrying standard PET bottles such as mineral water or soda drinks.

Just put it over a bottle with the bigger hole and pull it so the bottle snaps into the smaller hole. Now you can carry the bottle using the big hole. You can put it on a belt, you can put a line on it and throw the bottle into a lake or river to keep it cool or you can just carry it on your finger.

It's small - only 4 mm thick, uses only 3 grams of PLA for the basic version (5 grams for the on-strap variant), and can fit in any pocket or even in a wallet.