Was making a Toa Nuva Onua thing and don't have a Nuva Onua mask, time to start looking! : r/bioniclelego
Lego Bionicle Toa Nuva Tahu Gali Onua Masks Only | eBay
Peeron: Toa Onua (#8690-1)
Triple Trouble | New Elementary: LEGO® parts, sets and techniques
Quick Edit - Was interested in seeing the Toa Mata in a Mask Of Light style. No Miru or Akaku in the movie, so just Tahu, Pohatu, Gali and Onua : r/bioniclelego