Coin Bag (Super Princess Peach)
From the Super Mario Wiki, the Mario encyclopedia
The Coin Bag is a semi-common object that appears in Super Princess Peach. It is a floating, yellow-spotted blue bag with a ribbon and wings. When Peach finds one of these objects, she can open the Coin Bag by using Perry, or by throwing an object or enemy at it. Once opened, they release coins (and occasionally, hearts and crystals) to collect.
In an early version of Super Princess Peach, Coin Bags had a slightly different design: they were originally less rounded at the bottom, and lacked wings.