Imagine. You want to go fishing at sea with your kayak and you still don't have a decent waterproof protection for your digital camera.
You don't have time to search one, to spend time on the net or to spend money.
So you decide to make one.
This happened to me last week.
I looked around and I found:
- a light spot
- a plastic box
... and a condom / or clingfilm
Less than ten minutes later my pocket was ready and I went fishing tuna at sea. I didn't catch anything, but my camera survived.