I'm notorious for touching up my walls about every other month or so.  The kids are dragging their hands across the walls as if they are just learning how to walk, using the inside of our home as a basketball court,  and bouncing their duffle bags off the walls as well.  As you can imagine, the walls take a beating - being scratched and nicked all the time.  Since most of my downstairs walls are "Cappuncino Tan" - I purchased five gallon buckets of paint.  At touch-up time I have a tough time dragging out the five gallon paint bucket to dry brush up the areas.  So, I was in the famous dollar store downtown and purchased a turkey baster to take the paint out of the can and into a small plastic tupperware or cup. I figured it's worth the buck investment and no biggie if it did not work.   It worked like a charm!  I did not spill any paint down the sides of the large bucket or accidently drop the cup into the bucket either!  When done, just rinse well.  In fact, it's a great idea to make a baster a permanent addition to your workshop for transferring any solvents, varnishes, paints, and other liquid chemicals.