I don't know the technical term for these glass domes, but I love them. Usually they come with wooden plates (that I assume are for cheese), but I don't know what one calls the complete set. Enlighten me.
I, however, prefer the glass dome on its own; I only have one of these domes so far, but they're always at the Goodwill. I thought about collecting them in various shapes/sizes; I have only seen them in the size and shape identical to the one I have - not that I couldn't have more, but I like variety.
What to use them for? I'm not sure; the glass is so beautifully thick and heavy...
Anyway, something to collect. And use.