This is a pretty useful exploit, for getting skill up.
What you need:
Skinning Profession
Basically, the exploit is, you can skin any creature (even most humanoids). The skinning icon will NOT appear after you kill the creature, you will need to use the Skinning spell from your spellbook.
This will skin the creature, yeilding no drops, however, you WILL gain skill for skinning that creature.
-SectorSeven