I happened to run into a local cardiologist today at the hospital cafeteria. He is a Flyfisher, and we went to Montana one year.
Anyway, he invited me into his lab as he wanted to show me something. He primarily salt water fly fishes and often at Christmas Island.
So he rummages through the drawers in his lab and pulls this out. He made it with a couple soda straws. I thought it was quite ingenious. Dr Funai's Shrimp