This object is known as a wobbler. It has a unique geometric body that lets it move in a straight line while looking as if it will constantly fall over. It makes for a fun toy or interesting desk piece.
Video of it in action can be found here: https://www.instagram.com/p/BwAl_IcnSBd/?utm_source=ig_share_sheet&igshid=1q33j4s9zvl6c