Virtual meetings are now the norm so why not make them look good while doing it?
There are lots of good ones around, but there’s some particular favourites such as stills from a Wes Anderson film.
Another favourite for this bureau is pictures from the interior of the TARDIS from Doctor Who.
For whatever image you decide on, a good tip if you’re looking for realism, is the user places their camera at the same distance as it is in the desired background. It will make the user look more like they are actually in the photo.