Everyone's answer is correct, but let me elaborate why you'd say for and not to. Then, to answer your question, you should say "normally make coffee for yourself." Saying "make coffee to yourself" makes it appear as though the action of making is targeting you in a directional way, rather than having an abstract link to you. This also takes away from the meaning by focusing on you instead of what you are making (again, showing a direction of your making). When it comes to meaning, "for yourself" means two things: First, you are giving the reason for why you are making coffee. Secondly, you are showing that you're making it in order to offer it to yourself. Words that have to do with "doing" and "making" can only be functioning in a "replacement" manner. In other words (and I have to use someone else for this example), if you make coffee for someone else, you are essentially replacing them for the action of doing the making. They could make the coffee themselves, but you chose to do it instead, which is why you would have to use "for" and not "to." These words (make and do) are always neutral in their meaning of where they can be "aimed" at/to.

Make coffee for yourself is the correct one. Also note that coffee is spelled with two "e's"

1) Make coffee for yourself. and 2) They are pears.