Level 58
We're introduced to a new type of beam in this level: the spinning beam. These things can be fixed in mid-air, and spin around on their axes like a propeller. Set up three of these in an L-shape around the red button. Use the triangle to send the entry ball to the right, and place the little eyeball so that it gets knocked gently down onto the right-most spinning beam.
Alternative solution
Yashar Kamyar also sent in this better solution:
This solution is from Galia, it's quite similar to mine but also uses the large marble:
