Free: Contests & Raffles.
I have heard of people using a dremel with the fiber cutoff wheel. I'm guessing that the cross bow is one of those that does not have cams like a compound bow? if so you could cut them down for that. IMO.
I turn em into range markers.
Mine are 30". I send them to my ex-wife so she can measure how wide her butt is. I need bigger arrows.