Four things are necessary for your survival on this here Earth: food, water, oxygen, and shelter. That's just Biology 101.Now, your access to the following 10 items won't mean the difference between life and death. But they *can* mean the difference between, say, an organized wallet and a bulky pocket, or a delicious home-cooked dinner and a Lean Cuisine you found in the back of your freezer.Plus, they're all on sale for the next few days, so you really can't go wrong by checking them out.Full Face Snorkel and Diving MaskA must-have for any tropical getaway, this GoPro-compatible diving mask lets you record underwater adventures without obscuring your view of the ocean floor. It also features an anti-fogging design, which you'll know is a huge plus if you've ever been snorkeling or scuba diving before. Read more...More about Gadgets, Mashable Shopping, Tech, and Consumer Tech Click here to read full news..