What started as a simple clip of drawing lines in a Zen Garden quickly became an adrenaline-filled roller coaster! ;)

This is a school project I did under one simple principle: In pairs, create a 50 second video with any sound you want, but no edits to the video. My partner and I began with a clip of me drawing lines into the sand of a "Zen Garden" while the camera dollied on our "super high tech" dolly rig (a lunch tray rolling over some paint bottles). We decided to play the clip in reverse, as it looked very interesting to see my hand "un-draw" the lines in the sand. Later on we got the idea of playing roller coaster sound effects, as the action of the clip vaguely resembled a roller coaster. Put it all together, and this is the result.