2 playing cards, and somewhere more than 2.5m high to drop them from.
Hold the cards about 0.5m up.
Hold one card vertically and one horizontally in the middle of each card and then let go of both together. Make sure you release them cleanly.
Which hits the ground first?
Stand over a drop, (standing on a stable table will probably work but be careful).
You should find that the flat card falls staying horizontal all the way down, but the vertical card starts to spin, and as it does so it starts to glide horizontally.
The vertical card falls quicker to start with as it is edge on to the air and has much less air resistance, but if it falls far enough the horizontal card will catch up and overtake it.
The flat card falls fairly stabily just sliding from side to side, where as the vertical card starts to fall more quickly then starts to spin, and as it does so it glides sideways. This gliding is actually slower than the the flat card falling.