Open the parcel: at random, either a pawn (half the time), a knight (a quarter), or a bishop (a quarter) joins your pocket, ready to drop on a later turn.
You draft Care Package in either mode. Activated: you choose when to use it, and using it is your move for that turn.
As a item card, it is a one-use consumable, drafted in either mode.
“No return address. Smells faintly of oats.”