Let's talk about it.
I could squirt some paint on it and epoxy it, but that would hide the wood, and part of what makes them look so nice is the wood. I can build and finish an OK plug to fish with, but lately I've started playing with things other than plugs, and they are all finished to see the wood. Lots of things that can be done to let the wood shine thru....shellac as a sanding sealer, some Danish Oil for some color and protection, and some clear polyurethane or, even easier, some spray lacquer from a can that you can get at Homies make for a pretty easy, pretty durable finish. Or, use an epoxy topcoat for even better durability, although I've never tried putting that into a dishwasher.
Second thing is, if you use epoxy, there are 2 ways to let it cure, 1st is applying the epoxy then hanging it somewhere, which will cause some of the epoxy to run off, and ultimately leave a drip on the bottom when it cures. That can be sanded off. If you can figure a way to flip them every so often till they firm up, that works too.
Second, which I prefer, is to use a spinner, so that the wet epoxy stays on the surface and after a long enough time, will firm up, harden, and cure, without dripping. If I was going to finish one of your openers, that is the method I would choose, but plugs are easy, they have a loop at each end which can be used to hold the plug onto the spinner. the openers have a loop at the opener end, so far so good, but no way to connect the other end. The hang method may be the better choice here.
That said, i think you should try to finish them. Etex or, as it is properly called, Envirotex Lite, is available in small bottles online or at Hobby Lobby or Michaels. It is pretty user friendly, mix equal parts of A and B, stir it up, and brush it on, gives a nice thick, hard, durable finish. Homies also sells Park Super Glaze, same type of product, same procedure. Small bottles of etex are $16 on Amazon, incl. shipping
Just an idea how good the wood looks under the epoxy, the first pic is a small cedar bowl that I was just fooling around with. 2 Coats of etex, because the first coat soaked in pretty well. I made a small arbor that could screw to the bottom of the bowl to get it on my spinner
And a cherry bowl that only had sanding sealer applied, sanded, and then multiple coats of spray lacquer from a can.
If you don't like the glossy look, shellac, oil and wax make for a more classic, semi-gloss look.
And if you really don't want to finish them yourself, send me a couple and I'll do them. When you see how good they look and how easy it is, I think you'll want to try it.