You know you’re busy when you open the microwave to heat up the coffee that you didn’t have time to drink and find yesterday’s coffee that you heated up for the same reason.

Theres always time to chug down some coffee.

If you do not have time to brew, barely reheat it..
Consider stocking Up on ice coffee.
A Small bar fridge / snack fridge below desk works usually does the trick.
An argument for one, could easily be that it improve your efficiency by lowering the time you have to spend away from desk. (Eg. Waiting for microwave to heat coffee)

Just make a new one, duh.

In my country, there's death penality for the ones that use microwave for coffee