Ideas of questionable quality

[Vitatroll]

The philosopher's stone, or stone of the philosophers (Latin: lapis philosophorum) is a legendary alchemical substance capable of turning base metals such as mercury into gold (chrysopoeia, from the Greek χρυσός khrusos, "gold," and ποιεῖν poiēin, "to make") or silver. It is also able to extend one's life and called the elixir of life, useful for rejuvenation and for achieving immortality; for many centuries, it was the most sought-after goal in alchemy.

So, make the Philosopher's Stone:
Effect 1: Turn an object gold when slapped with it
Effect 2: Heal a person when slapped with it
Effect 3: Required for SoS immortality
or
Just make it a really, really voluminous beaker. Sometimes people 'need' one, but can never find one.