You may remember the movies where the hero or villain takes a piece of clay and presses a key into it to make a copy later. Anyhow, today, most locks are digital, so making clay copies seem a bit old school and obsolete, but think about it – most keys are still physical.. and what you may have thought were just movie magic, well this youtube video begs to differ…. Be sure to keep track of your keys!

Say you need to fix some broken thingy, if you had a 3D printer you might print a replacement – but again, that might also entail that you can actually model the piece. There seem to be a cheaper alternative that at least some of the time might help you out..

Baking soda and super glue – huh, yeah – watch the video, looks legit.. I have not tested it myself yet, but it looks like something worth remembering if something breaks.