Can anyone identify this Lego piece? Clear red Bionicle head with clip? I got this in a big box of LEGO from my cousin and this was in there. When I asked him he said he didn't know anything about it. I also couldn't find anything on the Internet about it. It has no identification number or any other marking except Lego 2003. I was wondering if this was a prototype. If anyone can identify it I will be very happy.
It's from a tooth brush. It is the thing that covers the brush itself. Here is a better picture of the green one.



Another picture :