Drill bits and screwdriver heads seem to disappear from my toolbox all the time.
Today’s invention is a way to ensure that I have to return each head (or blade) to the toolbox before grabbing the next one.
A transparent soft plastic magazine holds all my screwdriver heads -except the one which is currently in the screwdriver itself. To get a new head, I have no choice but to extract the one which is in the screwdriver and press it into the correct side of the magazine to squeeze out whichever new head is required.
This might easily be extended to any system of replaceable elements which is used one at a time.