Don't we all want those little things in Minecraft?
Convert wool back into string, burn rotten flesh into leather?
Or do we want a way to get bones and ender pearls without killing skeletons and enderman?
Well wait no more and download this mod.
It adds several recipes to craft all these things.
It will make Chickens, Cows, Sheep and Pigs drop bones. And it adds a new ore that you can smelt into ender pearls.
Uses 1 Block ID.
And everything can be changed in the config file.
You dont want animals to drop bones? just disable it!