The door stays locked or unlocked if the key is broken or missing.
The puzzle is incomplete without that one little piece.
The winter jacket is useless without a zipper.
A necklace ceases to be a necklace without a clasp.
Even the largest avalanche is triggered by the small things. Vernor Vinge
I have been neglecting a lot of little things. Time to locate the proper bolts, the necessary hardware and the essential paperwork.