I seem to remember that making arrows/bolts out of bone (from bone golems, skeletons, or skeletal giants) was supposed to add some sort of beneficial effect to them, but can't find any info about it on the wiki. Was that just a rumor or is there actually something to gain from using bone.... and what is it?
Starchitin
A severed gnomish hand crawls in on its fingertips and makes a rude gesture before quickly decaying and rotting into dust. A gust of wind quickly scatters the dust.