Hitting your finger or thumb with a hammer is a concept most people are used to. Cartoons love bringing this workplace incident to life, and DIY lovers may have even suffered the pain themselves. So, if you want to avoid it ever happening again, you might want to try out this nifty little hammer trick. All you need to do is place a bobby pin around the thing you're looking to hammer.
The pin will keep the nail in place, meaning that you don't have to use your fingers as a barrier. Then, you can hammer as normal without bruising yourself in the process.