Stack and take apart building blocks

Stack or snap 4-6 building blocks into a tower, then take it apart. One round per clip.

Start: 4-6 loose building blocks on a table.

Record: Stack or snap the blocks into one tower, one at a time, and let go for a second. Then take the tower apart block by block.

Done when: All the blocks lie loose on the table again.

Also counts: Plastic bricks, wooden blocks or stacking cups; any colors and sizes; a table or the floor. Send as many clips as you like, changing the blocks or their order 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.