>>8657353I propose a theme where the minifigures are supposed to be living beings that are just minifig-sized and live in normal people's homes in camouflaged items and appliances like pencil holders, lamps, potted plants, coffee mugs etc. The sets would be somewhat scale-models of realworld objects but with little doors and windows and the inside is fully furnished. The minifigs would also have vehicles they use to scale the furniture or stairs in a house.
Backstory: They are indigenous to Earth as in Arietty and they live by "borrowing" stuff from humans, or they are little aliens on an exploration mission where they hide in houses and collect stuff for research.
