I just stumbled in this thread,I have the following idea:
perhaps instead of a wishing well perhaps there could be lost in the wilderness (that area that if you miss the road and go over the hills may stuble into some monsters and after a while walking in a somewaht straight line you reach the \"end of the world\" ) could be some sort of a cerimonial offering/sacrifice altar of some sort, a solid stone,crystal,wood or whatever non living material npc that if you give him certain itens like a gobble ear, a rat eye plus a tefusang tooth you would be allowed to try a \"summoning\" spell to aquire the desired item,like a special goblet or just a pice of bread, and like with any other magic it would depend on the caster hability, energy and luck
perhaps which item would be materialised would depend on the combination of itens provided as offerend (perhaps even sacrifice of a sentient(player) or pet or another captureable/killeable living creature for the characters more inclined on the dark/evil side)
more powerfull the itens or monsters to be summoned the more harder, dificult and/or rarer the colection of itens required as an offerend would be, it could perhaps even be included in some quests, a quicker shortcut for some powerfull mages or the culmination of a quest of aquireing several itens to obtain the desired main iten of the quest.
it would be an increadibly flexible \"device\", after some time just almost every item/monster in the game would have a combination of other itens required to summon it, from a mushroom to a tefusang, from a long sword to leather pants, with the right combination of itens, plus great sorcery prowess,and with some luck you would get from it exactly what you desired, or perhaps some nasty backlash explosion or vengenfull avatar (megaultrauber freakmonster of doom(tm) or somthing totally new or even somewhat abstract, a few special fx and you ared dead) of a unsatisfied deity would smythe you for your insolence if things go wrong(or perhaps just only if it goes REALLY wrong 8o)