For this shot I used a plastic cup that was laying around my studio. As I was walking out for a local workshop that I was teaching at, I thought it would be interesting to grab some items to shoot through. I saw this cup, cut a hole in the bottom with some scissors then threw it in my bag.
Here's the result shot with the Canon 5D Mark 3 \\ 50L. Settings were 1/250 ƒ2.5 ISO 100.