As I was making bath bombs to give for Christmas I felt a little heartburn. I reached for the Alka Seltzer... Wow... $8.99 for 36 tablets! One dose is made of 2 tablets, so that comes to 50 cents per dose. Then I looked at the active ingredients. Citric acid and sodium bicarbonate. Exactly what I was using for the bath bombs! Sour salt and baking soda! I made a rapid calculation: one dose comes to 2 grams of citric acid, and 3.88 grams of baking soda. If I figure that citric acid costs $4/lb and baking soda is $1/lb, the exact same dose of alka selzer's active ingredients would cost me about 2.5 cents to make myself.... Twenty times less than the store bought version! OK to be fair, I didn't figure the cost of filler, and the store bought alka selzer also contained aspirin, but I neither needed nor wanted the aspirin. Even if you end up spending more on the citric acid and less for the Alka Seltzer than I did, you'll still come out ahead.
On Historic Hunter, Shawn Woods repurposes materials he finds in a local dump into arrowheads using antlers and simple metal objects. The ancient technique, called flintknapping, will be handy to know after the zombie apocalypse.
The Lytro Illum is our all-time best-selling camera and here’s our best deal yet. Apply the code “Lytro10” to save an extra 10% off on this camera’s mind-blowing functionality in this exclusive one day only sale.
If you’re looking to earn a top salary in the tech industry, there’s no better career than coding. However, sometimes the hardest part of entering this career path is knowing where to begin.We took the Complete Web Developer Course because it took that decision out of our hands. This course teaches beginner-friendly coding languages that will also help land an immediate […]
To be a Pokémon master, you’ll need a phone that won’t constantly die on you. Because nothing is worse than seeing the screen go black right as you’ve finally found the Charizard of your dreams.That’s why we’re so excited about the LinearFlux PokeCharger Portable Battery ($39.99). With its 3.0 Amp HyperCharging technology, this slim battery will […]