If the main objective is to have a bell and avoid dying, then I have had very good luck with this cheap Zefal bell. I love these — very small, very loud, pretty chime. If you’re after a brass bell, then I agree with others that the extra expense of a clamp bell is worth the peace of mind in not drilling your stem.
EDIT: Apparently, it's called the "Piing" -- yes, with a double "i".
