Around here, there are a LOT of people who plant them as ornamentals & just let the fruit fall to the ground, much of it rots, a lot gets sucked up by the lawn mower & the rest get raked up & thrown away.
Granted these are the really small crab apples, they're a little bigger than a big cherry. A PITA to deal with, but they're chock full of those wonderfull acids & tannins that when blended with regular store bought apple juice, can make a ho-hum cider really pop.
Take a drive around the neighborhood & see if you can find a couple of crabapple trees in somebody's yard. If you ask them nicely, they might let you come pick those crabapples this autumn. That's what I did & I've got a standing invitation to pick fruit from 3 different people & 1 restaurant. Just make certain they're the edible type of fruit, get the tree ID'd at your county extension office.
Regards, GF.