How to make a small hole thru glass without using a drill. One cheap grocery store material plus water removes calluses from feet. This common substance prevents pain and swelling of bee or wasp stings. How to kill ants in their holes. Inexpensive and not poisonous.
Luminous ink glows in the dark.
Two simple ingredients. How to treat paint, varnish, so insects will avoid the surfaces. How to make a cheap ink that will write on glass or bright metal. How to remove iodine stains. How to solder glass to glass.