One pretty scary one involved the VOR antenna on top of the tail of a Cessna 140. It was the V shaped wire type that stick out from the top of the tail pointed out and forward. I was doing the walk around and was distracted by someone asking me a question.
The result was when I turned my head back and leaned in the end of the wire poked my face about 1/2 inch below my eye.
The other one involved my transition from a type one float plane pilot
"Those float plane pilots that have yet to fall into the water"
To a type 2 float plane pilot
"Those float plane pilots who have already fallen into the water"
The result was that most of the skin was removed from my left ankle by the chine of the float as my foot went by, rapidly followed by the rest of my body. My excuse is I was distracted by the girl in the skimpy bikini