Was reading some old threads on the adom newsgroup and there was what I thought was a brilliant idea.

Maybe when you 'D'rink or '!'dip something into a potion you have a certain percentage chance that instead of the item disappearing you could end up with an empty flask or vial.

Then when you come across various water sources you could fill it up, but also you run the risk of the not necessarily knowing the status of that water but you could still get it blessed. You could then also fill your vial at a pool and it will give you a random potion or even a chance while filling it you spill some and you get some other random affect.

Any thoughts?