The backgrounds mainly I just use different fabrics - a sky print, a white sheet for snow, a grassy print for grass etc. Occasionally there will be a Playmo set with an actual printed background (e.g. the Hansel and Gretel, or the royal ball, which came from a Playmo advent calendar set).
I set the scenes up on my dining table, the sky is wrapped round some sheets of foam board, so can be propped up.
I'm not in any way an artist or designer! My jobs have always been in healthcare. Originally some of the Playmo belonged to my ds as a child (he's now 24). He loved it and had quite a few sets. One year we decided to set up a "general election" scene (when there was a real one taking place). I posted about it on here, and lots of people commented, and Norman the Foreman was duly elected Prime Minister.
The next year we staged a royal wedding (on the same day as William and Kate's). But at this stage we just set things up on our living room floor, no backdrops. But as ds got older I started creating my own scenes, did another 2 royal weddings in 2018 etc.
I'm pretty much retired, so do have time but also I don't post stuff all the time. I think this year I've just done a small winter holiday in February, a PlaymOlympics this summer, and this one. Although the PlaymOlympics was a massive project! 