Keep the edge of received envelopes neat and tidy with this handy opener.
“Why not just use scissors?” Excellent question. Because you’ll set the scissors down after opening the letter, rather than put them back where they belong. A ghost or some fey creature will take them and run off (don’t worry, they won’t get harmed). Your scissors will be lost — quite probably for the rest of your life. Oh, you’ll buy another pair.
And then another. And another. Before you know it, you’ll have spent tens of thousands of dollars on scissors unnecessarily.