I'm a big fan of Skin Food products so almost all of my makeup is from there.
My on-the-go routine is quite simple:
1. eyeliner for definition (I prefer liquid)
2. smudge-proof mascara
3. nude lipstick or lip gloss
4. moisturizer/sun block to brighten up my face
I usually do steps 3 and 4 on my way out the door -- excellent time savings!