Staerwen's Bag of Tricks

As an action you can pull from the bag and throw
a ball up to 20ft. It transforms into a creature.
The creature vanishes at the next dawn or at 0 hp.
They are friendly, and acts on your turn. As a
bonus action, you command what action it takes
on its next turn, it's movement or general orders.
In the absence of such orders, the creature acts in
a fashion appropriate to its nature.
Once three fuzzy objects have been pulled from
the bag, the bag can't be used again until the next
dawn.