Spin Block (Mario & Luigi: Superstar Saga)
From the Super Mario Wiki
Spin Blocks are objects in Mario & Luigi: Superstar Saga. They are platforms that appear only in Gwarhar Lagoon. They can only be moved by using Mario's Spin Jump ability, and once pushed, they continue in the same direction until they hit a wall. It can only be climbed by using Luigi's High Jump. If a Spin Block is placed in an unreachable location or if it is sent flying off-screen, it only returns if Mario and Luigi exit and reenter the area.