Mysteries of the Stock Room

Why do we have two meter sticks taped together back to back?

What is the dark stain obscuring the markings between 30 and 70 cm on half of the meter sticks?

Where the hell are all the stopwatches?

Why are the demo magnets sticky?

Why do we still have six meters worth of a rusting, broken torsional wave demonstration?

Why are the springs sorted into drawers with color labels (“Springs-Red”) when all the springs are the same color, and there’s no particular correlation with the spring constant?

Why do we have five hundred yellowing sheets of newsprint?

Why are the metal projectiles stored in an unmarked drawer, rather than in the tray with all the other projectile launcher stuff?