Well, there was a period of time where Hank was stuck at supersized, so I guess they could have bought him extra large dinnerware then..? And maybe he feels like since it exists, he might as well use it..? It's just, Jarvis must have to make a whole pot of tea just for him, and that seems wasteful.

I'd rather see what tiny cups Ant Man and the Wasp might use. I can picture Jarvis at a craft store browsing the minitures isle for tiny little plates and bowls. I'd love to read a fic where they spend a whole day pixie-sized and hang out at a toy fair like the one in the music video for Hurricane Bell's This Year.

I don't know how the Hulk drinks, but an adamantium cup could only help.