bottle show
n.— «Now in TV production parlance, “a bottle show” is an episode of a television series that is deliberately designed to be shot on the cheap. Meaning that it can’t feature any on-location work, massive crowd scenes or elaborate stunts. Ideally, “a bottle show” must make use of the series’ pre-existing sets & costumes as well as keep the number of guest stars needed down to a bare minimum.» —“Scrooge U: Part XXIV—How Xena saves Xmas…er…the Winter Solstice” by Jim Hill Jim Hill Media Dec. 16, 2006. (source: Double-Tongued Dictionary)