Have you ever wanted to open an envelope without having to tear it, get better prices on airline tickets, relieve pain from burns, or use an elevator without stopping. Well now you can, The Life Hack Poster by Alex Croft ($30) brings together 75 of the most useful tips and tricks in life to save you time and money. It also includes instruction on CPR, morse code, keyboard shortcuts, and conversion scales. Throw it up in your kitchen or the office and you’ll get tons of use out of it. The Life Hack Poster by Alex Croft will be your perfect everyday companion.