Maybe return to Aleroth and clear out the orcs around there (the troll cave close to the bridge is a little tough; make sure you get the quest about the trolls first in the farmlands).
Do you have a collection of axes from the catacombs? Any small/medium charms, gems, etc? You could bring them to Ars Magicana (north east of the castle, south east of the graveyard) to sell or trade.
I don't think you can get Pickpocket up high enough to steal from Tingalf on character level 11 (this would be skill level 2, unless you have a bonus on some equipment).
