If you can't find the piece of your dreams on Metronaut, no worry, you can send us a suggestion.
You can access the suggestion form directly from the search (by clicking on "Can't find your piece? Request it!") or by clicking "see all" on the card showing the other users' suggestions at the bottom of the home page.
You can also see the suggestions of other users and vote for your favorite ones (or ask your friends to come vote for your suggestions).