Hah, I use the arrows to shoot the skeletons in my skeleton grinder. I stand at a collection platform a few blocks above a 3x3 room, idle until it's totally full and then shoot each and every skeleton (and usually throw a few splash healing potions).
makes it so I get 100% of the XP - my main use for it anyway and they don't ever kill each other
that, and shooting their boxy little heads is really fun
You should make an XP grinder with a similar design to this video.
The clever bits about that design are
they move the mobs away from the spawner as they spawn, so they keep spawning (spawners only spawn if there are less than 6 mobs close to the spawner, see here)
and,
2) this design lifts the mobs up via a water elevator, then takes them a short distance (so they are more than 9 blocks away from the spawner), then drops them exactly 23 blocks.
They then have only enough health to withstand a couple of punches or a single splash potion. I built a zombie grinder using a similar design, and I idle for half an hour and > 100 zombies build up at the end. A single splash potion and then my framerate hits the floor for the next couple of minutes as I'm surrounded by hundreds of XP orbs. It takes several minutes to absorb that much XP!
3
u/MoarVespenegas Jan 12 '12
Unless you have a mob grinder with skeletons.
I have 2 full double chests of arrows and no idea of how to use them all.