Flooring is an often overlooked aspect of a good vignette or diorama. But rather than treating it as an afterthought I think you'll find paying attention to this area adds a lot of punch if it's well integrated. This doesn't mean it has to be super elaborate or a parts hungry nightmare. This technique by N-11 Ordo is a pretty good balance of parts to impact and can be modified to fit a number of genres from space to castle.
Original author: Tommy