There are a number of Books of Origami circulating around the lake, traded back and forth by mages and monks. They vary in form, but here is one typical book's contents, accessbile by making an INT and then a DEC check:

A Horse  +2 penalty
A Tent
A Catapult  +4 penalty
A Canoe
A boulder -4 bonus
A clay golem (AC 5, HD 5, HP 22, DM 1-10 by club, follows simple orders for 24 hours, then winds down)  +4 penalty
A sword +2 penalty