Interesting question. I think it depends on the budget of the film or tv production and it’s the job of the set decorator to be able to source materials and and be artistically creative within that budget. Might be that parts of some sets were made from cardboard, polystyrene, foam or other cheap material and then spray painted to look the part. Also a lot of sets, especially these days, are computer generated and the actors and a few props are green screened onto the CGI image. Your cafe sounds like a great project. For futuristic panels I would suggest a stronger material such as plywood or MDF and have someone who is handy with a jigsaw to cut them in the required shapes, stick to the wall with strong adhesive and then paint. Would love to see a before and after of your cafe:)

<?xml version="1.0" encoding="UTF-8"?><md>Love it

What a beautiful project and one that I wish we had as our Client! Congratulations on a job very well done!

You need a plasterer to skim over the textured paint, or you could try a product like Polycell SmoothOver if it's not too big a space.