hmmm...
applying (liquid or stick) foundation with a slightly damp kabuki brush in circular motions.
cleaning brushes with facial wipes.
I just mentioned this in the pale skin thread here that I thin out water based foundation with a mix of glycerine and water (1 part glycerine to 3 parts water) mix the water/glycerine in a bottle first and then add it drop by drop to foundation on the back of your hand and mix with a brush.
eyeshadow to fill in eyebrows (theres a much wider variety of eyeshadow colours than there are eyebrow powders so finding a good match is much easier)
For dramatic, defined eyebrows take your mascara wand and wipe the excess off then lightly brush it through your eyebrows. Cheaper than an eyebrow mascara but just as effective.
I use a small lip brush to apply concealer.
apply blusher
before foundation for a more natural look. Also, applying powder blusher with a sponge gives a nice gentler effect than with a brush.
When applying mascara with a wire based wand (you know the ones that most mascaras had before they started messing around with them!) bend it at the base so you can get right into the corners.
use a concealer pencil instead of a white eyeliner to open your eyes up. Much more natural.
After applying foundation, take a singly layer of tissue paper and blot your skin to get rid of excess oils (if you want a matt look that is) cheaper than using those blotting papers