Damnit! I started to put that it would be easy for you! Nice job. I guess we are both showing our age and our roots. For those that don't know, it has a "flapper" in the bottom that lets it fill up from the bottom then closes via the water pressure on top of it.
That's how we drew water at grandpa's. He wouldn't let anybody talk him into a pump or running water. Said he wouldn't live in a house with a crapper inside.
Judging by the stains on the ends, it seems that both ends are inserted into something. Is the wood cedar?
It is not a clothes pin and it is a modern device that may have been around for a long time. The type of wood is not important. I don't think it is cedar. It does get inserted into something.
So, I'm assuming that it is used to hold something open with the large end. Not sure why the light staining on the slender end.
Time for hints, I suppose. The device does have something to do with apparel. To say that it holds something open is imprecise.
