I realized that, on the Flying "L", some of the propellers are wiggly-unstable. When you click on one, your though bubble says something like "Hmm, seems unstable". I dragged a Gyrostabilizer on it, and I got aether in return. Although after a while, I was out of stabilizers. I tested all my other items on it, nothing worked. Until I go to weapons, I tried my hammer, and it worked! I got just as much aether, without wasting an item!
P.S. I used the Gyro-hammer. I don't know if that is the only one that will work, since it is made out of stabilizers, but I will try with other hammers as soon as I can!