It’s happened to all of us (well, all who wear earrings!). You lose the back of your earring and you’re not at home to find a spare in your jewelry box.
Here are some DIY approaches to get your through the evening:
Pencil eraser: Make a hole in the eraser with the earring. Tried and true method.
Cork: Same principle holds true with a cork. Just break off a little piece and make a hole
Aluminum foil: (Bet you didn’t know this one works!) A piece of foil folded several times over will do the job.