Similar to our colander , Bran...a perforated pan, usually bowl-shaped, for draining off liquids, as in washing fruit & vegetables, pasta and rice. But yours is prettier laugh

I thought the sports ball was originally a 'human head' so went searching and found this interesting article...

The Mesoamerican ballgame or Tlatchtli

The bit about human sacrifice is disturbing....glad I didn't play sport back then!