What are your favorite plugs made out of?

My favorite are wooden ones. The ones I like the best out of what I have were made by my brother -

I love wood and stone plugs

I prefer bone. I have very sensitive skin so I can only wear real, solid gold, surgical steel, or natural materials. But for some reason I can’t wear stone for more than a day or two.
Therefore bone is now my go-to.
And the ear funk stink isn’t as bad with bone as it is with metal.

My favorite materials are crystals, or glass. I like my plugs to be heavier.

Glass fo sure