Here it is - a giant guide to masses of different elements for your ball machines. This technically is not an instructable per se, rather, it is an add-on to HOW TO MAKE A BALL MACHINE.
Step 1: The Path
This is the simplest Element. It is, in fact, hardly an element but rather a connector of elements, though it can be used as an element when combined with Path Curves.
Step 2: The Orange Slide
This is also a pathing of types, but it allows balls to travel at higher velocities and allows for many more twists and turns.
Loops and turns work well, however, at high velocities ball fly off the track on curves, so add guard rails.
Step 3: Ferris Wheels
Ferris wheels are big cheeses - they take up large amounts of space and pieces, but in the end they turn out fickle. If you can get them to work well - good for you. It all depends on the way you build yours.
Step 4: Freefall
Possible the dullest element around. Here, the ball simply falls down a chute. it's mainly used for connecting Elements.
Step 5: The Classic Spiral
This is a spiral originally seen in the Big Ball Factory. It can be extended or shrunk to your needs. It is a fine and classic addition to any ball machine.
Step 6: The Dual Windmills!
This is an original that I am allowing to be modified. In this, balls go though a boxy maze in which it passes though freely rotating wheels.
Step 7: The Maze
This one is from the Trampoline tower, i believe. it's a vertical drop with failures that allow the ball to slip though.
Step 8: The Pathing Spiral
This is a derivative of pathing - essentially, curved pathing wrapped around a single tower.
It only works on a blue rod tower, however.
Step 9: The "Flippers"
There's no better name for these anyway...
The ball falls onto this and flips over directly underneath the other side. It looks cool in rapid sucession as well.
Step 10: The Trampoline
Featured in the "Trampoline Tower". Balls bounce off these and into a designated target (Hopefully a Basket).
Step 11: Baskets
These are often useful to catch flying balls(No pun intended).