Sound effects would definitely enhance the effectiveness of the installation. Unfortunately, at this point it's going to be a bit of a problem to also create a sound effect that works through the sensor. Instead, i'll be using the video as and advantage and adding the sound effects to it. I intend to combine three different sound - Natural sounds, a motorcycle and a lion. But why a lion? Since one of the phrases on the stickers says "Attention!! Roaring Ladybird of Level -2" I thought that it would make sense to also put up a speech bubble on top of the installation (maybe use comic style bubbles - not sure about that) that says "ROAR!" thus creating a fun environment for the installation, a mixture of motorcycles, ladybirds and lions!! I've researched some examples for the speech bubble. Might get some inspiration!