Two words, tennis balls. They say you are able to find plastic bags in most waterways around the globe, but I wonder if the same can be said for tennis balls.
You see, I tend to always have my dog with me when I fish, and he goes ape over those balls, I think they must be coated in crack or the like. No matter where we fish, but especially on the Bow, he will always find those green fuzzy things. I don't like him having them in his mouth too long, so I put them away for disposal later. I only need to give him 5 minutes and he has another.
I guess its better those than things rather than some of the smelly items which can be found next to the river.