Maybe my taste buds just aren't that picky, but Folgers singles work just fine for me.  

I bring an insulated coffee mug, fill it with boiling or near boiling water, drop two Folgers Singles into the water and let them sit for 5-10 minutes.  As far as I'm concerned, it's good coffee, and since I'm the only one in our group of six that drinks the stuff, it's perfect.