I use Nido powered whole milk, too. I like to keep my morning coffee hot as long as possible, so using a powder is better than pouring some cold liquid into the coffee. I use it as a subsitute for non-dairy creamer powder. Funny, come to think of it, I don't think I've ever tried drinking it just as milk before.

Although I buy mine at a Chinese food store, it often comes with a Spanish label on it, so there are probably many ethnic grocers who carry it.