Water filter plug or mini bottle

thingiverse

Used here as a drip-stop cap for a Sawyer water filter. Now I'm able to put it away inside my backpack without the need for a plastic bag to catch the water that comes out after filtering. Also useful as a waterproof container for tiny amounts of whatever. Rowbot3D's idea is great, but the bottom is too shallow because my filter has a protrusion for connecting a straw. In order to not redraw the thread, nearadyn's step file was used to make a model that fits my filter.