We have a system that I think is very easy. We purchased one of these to store the bath toys: http://www.amazon.com/gp/product/B000MVQBG4/ref=oh_o05_s01_i00_details, which allows the water to drain. Periodically, I just throw the whole set of bath toys (they're all plastic) in the laundry machine. Obviously, no need to put them in the dryer :)
That isn't in the way when you shower? Hmm.