Originally Posted by Myosmith

Shake n Bake your inner tubes. Well, OK, don't bake them but put them in a gallon ziplock bag with a small amount of talc, seal the bag and give it a good shake in several directions. Carefully pull the tube out of the bag tapping the excess talc back into the bag as you go. Viola, a perfectly powdered tube ready for installation with no mess, no dust in the air, on the floor, or on you. Wastes a lot less talc than trying to powder the tube by hand and you can save the talc in the bag for another tube.