This kind of thing can be fun. It can also be just as or more fun to sit around with nothing more than some scrap paper and an idea. Especially no shade on people that don’t have unlimited budgets to spend on setups like this.

You don’t make full-size, movie-like sets, then dress up as your characters and use your own bodies as figures, throwing wads of paper while yelling “fireball?”

There’s a YouTube channel that focuses on how to make cool atmospheric D&D environments like this. I think it’s called AtmosSeeker? They’re smaller than I think they should be.

One time I built an arena out of kinetic sand, with shaped obstacles and dunes and stuff, then scraped a grid into it for battle. I built some working pit-traps into the sand itself that only collapsed with enough weight was placed on them, and I glued small weights to the bottom of the player minis to trigger the traps, while using light plastic kobold minis for the monsters, which did not trigger them.

The next week my girlfriend responded by running her game with a functioning sewer system with variable water levels.

…my wife came home from a chemistry demonstration with a cooler full of dry ice: we thought it would be fun to fill the master bathtub with hot water, dump it all in at once, and watch what happened…

…besides the obvious violent commotion, our entire house filled with a waist-high impetrable fog, enough that we panicked and quickly evacuated the cats lest they be overwhelmed by carbon dioxide…