i used a piece of random hardwood i found in the shop and a block plane. it took about as much time to get all the oldbits out of my barr chisel socket as it did to put an appropriate taper on the bit of wood. if you don't like it, it's easy to try again.
on my sorby chisel for the ring i used a bit of metal i found in the plumbing section at the hardware store, it was three inches long, now i have two extra rings somewhere. i recall the handle was a bit of dry fruit tree branch i found in the firewood pile.
in one of the recent fine woodworking mags there's an article on making a handle for a socket chisel as well.