A quote that I picked up from my grandfather, "They pay me the same no matter what they've got me doing."

I'd rather be doing something that will lead me to get paid more in the future, learning new skills

I optimize the way I put dishes in the dishwasher, I design my own closets so I'll have the best design for what I do every day (i.e. clothes I use regularly are close by) — eg. I hang my t-shirts because it's faster than folding them — etc.

There are things that can be optimized in serving coffee too!

And when you had enough, you can just start serving terrible coffee :D

Those things can be optimized, but the payoff for that optimization is pretty low.

That depends on how you measure the payoff.

Maybe they don't pay you enough if they can afford to waste your skills by making you serving coffee.