I have an antique bicycle horn. It's one of those pot metal horns with big fake jewels on the side. You squeeze the rubber bulb and it toots. When you let go of the bulb, the air goes back the other way and it toots a different pitch. How's that for cool?

However, the bulb is missing.

I also have an antique atomizer like fine ladies used to use to slosh perfume on themselves.

However, the bulb is missing from this one as well. The atomizer has a little ball valve in the end of the bulb that makes the air flow only one way, but the bike horn blows it out and then sucks it back in.

I have tried searching and I can find bicycle horns, turkey basters, atomizers, battery checkers and just about anything you can imagine with a rubber bulb it. They never tell you the size, so I can't just buy a cheap plastic horn and put the bulb on the antique. The bulb on the turkey baster is way too big where it attaches to the plastic tube.

How do I search for a source of parts for things like bicycle horns or atomizers? The people who make bicycle horns probably make the horn and then buy the bulb from a supplier, so somebody makes them.

Any ideas?
Howard