Darts for a CS big bore... I saved the tines from an old rake and filed them down to make tiny cutting heads. Used a super tiny drill bit to bore a hole down the length of the dart shaft (patience, patience...) and glued the head into the shaft and added a small length of shrink wrap just to make sure it holds together. They fly nicely, and penetrate well.
[Sorry, this blurry pic is the best I could get]