Coin Block (Mario Party DS)
From the Super Mario Wiki
The Coin Block is a rare type of Hex in Mario Party DS. The player who possesses it can choose to place it on any Blue Space or Red Space within five spaces from their current location. If any player lands on it, a coin block appears. The player will then have 10 seconds to hit the block as many times as they can. Each hit gives the player one coin. When the 10 seconds are up, they receive one coin for every hit. It can be obtained by picking it up in the Hex Area or stolen by a Snag Bag.