I picture the former as that they are gently and safely floating down to the earth, whereas the latter definitely matches the velocity at which rain actually falls.
The glove box is for your registration, proof of insurance, and a collection of assorted useless bullshit that you'll see once a year, and clean out maybe twice for as long as you own the car.
That cheap keychain you bought? Glove box.
Three tire pressure gauges that don't work very well? Glove box.
Throw in a dull utility knife, some electrical tape, fuses that don't fit your car, a blinker bulb, expired mints or chewing gum, a Bic lighter, and a clicky pen you got for free for going to something, and you've got a well-stocked compartment.
It's the junk drawer in your kitchen, but for your car.
Sand dollars?