I have a rural mail box in addition to a PO boxes in town. Some people like to take mail from the rural/street box, hence most mail goes to the PO box. . . but not all.
However, for Missey and me, getting mail out of the rural box can be challenging from a too low car or too high truck.
Hence, I finally did this . . . 1/8" tempered board slightly small than the inside of the box and a 1" grab hole to pull that mail that's way in the back forward for easier pickup.
Maybe nobody else has this problem, but . . . maybe someone does and has been wondering about a fix.