Solo Cup Lines
The red solo cups are the superstars of many college parties. Maybe you were too busy trying to enjoy your night to ever notice those horizontal lines on those cups. They are meant to tell you the amount of alcohol in there. The first line means one shot or an ounce of liquor. The next one means one glass or five ounces. The third one means 12 ounces or an entire bottle of beer!
Jerry Can Handles
A Jerry can is pretty common if you like to travel and go camping. Perhaps you know that it can store up to five gallons of fuel but are you aware of the reason there are three handles? This design lets you distribute the fuel evenly while you move it. If there are two people, both of them should grab the outside handles. If one person is carrying it, the middle one is the way to go.