Perhaps some visual indication of where the next object is gonna fall from? So that the player can move in advance. A tree trunk slightly shaking as if someone has hit it to make whatever is in its branches fall, or foliage peeking from the top portion of the screen shaking as well half a second before the drop? These are the first things that come to mind, there might be solutions that fit better your project :) Thank you for asking, thouh, I like coming up with ideas!