WELCOME to the Most Frequent/Nonfrequent Bionicle Pieces Topic!What is the most frequent Bionicle set piece?Don't say pins or axles. Let's say the head of Takanuva's staff. It was also used as the head for Vezon's staff and Nidhiki's legs.Or Lewa Nuva's Weapons.Just... so many of them in my collection.What was the least used set piece, even?Please don't say masks, because that's a little too specific.I'd say Barraki Eye Pieces. Not enough of them for a MOC.Not for me, anyway. Whenever I find two of them, my room is trashed (from looking for them) AND they don't match in color.That's my luck sometimes.Enjoy!