Screw and unscrew a cap or lid

Screw a cap or lid onto a bottle or jar, then unscrew it again. One round per clip.

Start: An open bottle or jar and its cap lying next to it.

Record: Put the cap on and screw it until it is tight, then let go for a second. Unscrew it and put the cap back down.

Done when: The bottle or jar is open again and the cap is on the table.

Also counts: Water bottles, jars, tubes, thermoses or spray bottles; wide or narrow caps; full or empty. Send as many clips as you like, changing the bottle or jar each time.

How: phone on your head (not on your chest or in your hand), both hands free and in view the whole time, good light. One continuous clip of one complete round, about 10-60 sec (max 90 sec). Start recording a few seconds before you begin and stop a few seconds after you finish. Keep the app open until it uploads. Keep faces and documents out of view.

Can be declined if: not first-person, phone held in a hand, hands out of view, the start or the result not visible, the round not finished, or too dark or blurry.