vocabulary faillllll, help pls?

Words I cannot find either in head or in thesaurus / dictionary or online today ...

wig stand -- I'm sure there's a technical term for the thing you put a wig onto when you're not wearing it. (Form?)

front of a theatre box -- I've pencilled in 'parapet' but that doesn't sound right

embroidered / lace THING on arm of armchair to prevent stains -- not an antimacassar, surely?