Two-channel vibration motor test – equal-power panning (used in audio) applied to two vibration motors and controlled by a joystick
Testing different papers for asborbing essential oils for a smell-based videogame (handmade paper worked the best, bristol board the worst)
Absorbing scents overnight in a plastic bag
Testing a smell-release valve using a very small servo motor, a round valve with soft foam gasket, and controlled by an Arduino