Go to a butcher, Im sure he can supply the proper sized bone. Then all you would need is a woodworker's table thing with clamps and a belt sander and a chisel and hammer to carve the bowl. Making the hole from the mouthpeice to the bowl might be a lil tricky, probably can find a drillbit that will do the job though. Try to find somebody with a lot of tools is basically what I'm saying, like a carpenter or something. This should be pretty do-able with a little searching around.