Another week, another batch of cool inventions you probably never knew existed. In this roundup, we bring you the upside down helicopter ceiling fan, a nifty Prodyne fruit infusion beverage pitcher, anti-theft lunch bags, a stick-anywhere digital clock, and very cool-looking Steampunk USB drive cufflinks. Click here to view the first image in today’s viral picture gallery. Continue reading for a viral video of a 4-year-old who foiled her babysitter’s robbery plot.