Funny story--I was playing at a local club recently and we were all about to hit our approach shots onto the green, however, there appeared to be a large object about 20 feet left of the flag. It looked to be a leaf blower, but we all thought that was absurd. Sure enough, the group in front of us brought a leaf blower to the course and left it on the green by accident. Is there a rule on that one? Can you bring your own leaf blower? What if one of our shots had hit said leaf blower?