When you have a lot to paint, but even if changing the color — cast under the cans the paint will not save enough. Meanwhile, you can do one enough to insert it into a plastic bag and secure with a rubber band.

This is good because the dye packs are easy to change, and if you tie the neck — the paint will last long, will not wither.
Recommend to read
THE SIMPLEST FLASHLIGHT
Yes, it's probably easier to not think. For the manufacture of such "Firefly" will need only a flat battery, the light bulb is 3.5 V and the two rubber rings or a bit of adhesive tape....
ELECTRONICA — TREE
Kit electronic Christmas decorations from four independent devices developed and produced by the student of 9th class member directorship radio children's Palace of creativity from the...