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.