Low and medium quality wolf/bear skins sell for 1-2pp each, HQ bear skins are 25-30pp each in EC. Kill anything around that'll give you exp, and check drops against
http://ahungry.com/eqauctions to see if they're valuable. Keep bags in the bank so you can stash away skins until you get a chance to head to EC.
Greater lightstones drop from willowisps and can be turned in for a quest reward that sells to the questgiver for >9pp each. You and your friends can head to Erud's Crossing near Qeynos around lvl 10-12 and stay for several levels. Regular lightstones vendor for a little over 1pp each, iirc, and the greater ones are obviously great moneymakers.