Honestly there are a lot of ways to communicate that it could be fun to explore in a fantasy setting: changing color, pheromones, flashing light, dancing / movement...
I enjoyed Luthor's speech about how he was going to kill Superman's girlfriend, his parents... And then I really thought he was going to say "and your little dog, too!"
While I was in college I would move back home during the summers and run short campaigns. They were usually about 6 sessions long. They were a lot of fun! Players get to make shorter commitments and as a DM I can focus on telling a single story well.
I ran three short campaigns that way running...
Traditionally, prep has been a big part of play for me. In the past I would often prep whole campaign worlds, or come up with systems to randomly generate adventures or settings or encounters, even knowing it would probably not be used. When I ran campaigns, I actively and purposefully...
Since this is posted in "TRPGs in General" I'm not assuming a single system. In my opinion, "typical" more describes how the characters fit into the world than any numbers on their character sheet. I enjoy it a lot more when campaigns start with characters being typical of the world or society...
I most enjoy games in which the player characters start out as typical and then grow into extraordinary. I think it's a lot of fun to see their progression.
Kids playing on a playground.
As a DM, I provide the structures with hints of what you could use them for. The players decide on how they actually want to use the structures. Not everything has to be used. The same structures can be used over and over for different purposes.