I like to collect weight-reducing bags. Might be a fun pastime for a necromancer. Check out Bag of Sewn Evil Eye and Light Burlap Sack, among others.
http://wiki.project1999.com/Weight-reducing_Bags
Forager Bag is my favorite! I made a level 5 Ogre shaman mule to trigger the quest mob and I get a bag on every character.