From the award-winning musical "Into the Woods" (ITW), the childless baker and his wife find they are childless due to a curse placed by the witch next door. In the opening prologue, the witch tells them how to reverse the curse:
"You wish to have
The curse reversed?
I'll need a certain
Potion first.
Go to the woods and bring me back
One: the cow as white as milk,
Two: the cape as red as blood,
Three: the hair as yellow as corn,
Four: the slipper as pure as gold.
Bring me these
...
I guarantee,
A child as perfect
As child can be.
Go to the wood!"
My kids came up with idea of releasing four travelbugs for the four potion items--which were released this summer (TB6RD1P, TB6QYWW, TB6RCPZ, TB6RCRX)
The goal for these TBs is to come to this cache. Once they have all made it back, my kids want to release a fifth TB ("A child as perfect as child can be").