Love these- so cute to have tucked into dark corner a in the garden. Make lighted balls with chicken wire and tiny lights- cute, cute, cute. Great for my front door planters when there are no flowers in them.
This is a cloche. Cloche means bell in French. I believe a cloche was originally referred to as a small glass dome used to force plants to bloom (like a mini green house). But in decor terms, it's usually a display (raised on a stand) under glass.