A Radon Testing Kit!!!
This site says it is a "great holiday present"....Here's an excerpt from the site:
This holiday season, give your loved ones the gift of health. Radon
test kits make great holiday presents for friends and family, reminding them to
test for radon to protect their health. Think about giving test kits to
friends and family who have recently purchased a new home, friends who might
want to protect their children at home, or anyone, to reduce their risk of
becoming one of the 20,000 Americans who dies from radon-related lung cancer
deaths each year.
I don't know much about radon gas, but whoever wrote that it's a great holiday gift makes me glad I celebrate Christmas instead of "holiday"!