Think chalk is just for teachers and kids, think again! I came upon this today....and here are some of it's "other" uses:
*Lifts Stains
Grease stains and ring around the collar can benefit from some chalk treatment! Rub a piece of white chalk into the stain and let it soak up the grease for a few minutes. Then, dust off any excess chalk and launder as usual. The calk dust will get into the fibers and absorb the oils, making the stain easier to wash out.
*Absorbs Moisture
Moisture and humidity can cause silver to tarnish. To slow the process, wrap a small bundle of chalk in cheesecloth, tie it off and store it with your silver it's absorb excess moisture and keeps silver from tarnishing. This same method will work in your toolbox to keep your tools from rusting.
*Stabilizes Screwdrivers
Rub some chalk on the business end of a screwdriver, and it's less likely to slip as you turn the screw.
*Combats Mustiness
Hang a bundle of chalk in your closets and cabinets to keep them from getting damp and musty. The chalk will absorb excess moisture from the air- humidity that otherwise leads to mustiness.
*Perfects Patterns
The next time you need to trace a pattern for a craft project, use the item tailors have used for ages: chalk. The markings will be clear and easy to see, and when you want to erase them, simply dust away the lines.
*Repels Ants
To keep ants out of your house, draw chalk lines around your doorways and windowsills. Ants won't cross a chalk line. It's not entirely clear, but some say the ants don't like the particles sticking to their feet, while others say they're averse to the calcium carbonate in the chalk. Whatever the reason, this nontoxic solution will keep ants outside where they belong.
What other uses have any of you found with chalk besides the obvious?
http://www.diylife.com/2010/06/10/unusual-uses-for-chalk/