Press Ctrl, Shift, and ~ then a "?" should appear on the left side of the screen. Type the following items and then hit enter to spawn the indicated item. (These cheats can also be activated in town:)

Fate statue: a statue with a glowing red light on the bottom of the statue should appear nearby you. Click on it to activate it and it either will give you a monster or a random gem will pop out of the statue.

Magic Anvil: an anvil should appear nearby you. Click on it to activate the anvil and when you put a weapon/armor in it and click enchant you will get a message saying you got an enchantment or nothing happened (this is just like the enchanter in town but it is free:)

Shrine of Learning: a shrine should appear nearby you. Click on it to activate the shrine which will either give you a good or bad effect on either your character stats or your skill stats most of the time. Sometimes it won't do nothing.