We developed some guidelines for Blindbox Series  -

  1. We add the different figures as well as the Blindboxes themselves as users could own one, or more likely sellers want to sell them.  

  2. The Blindbox should have its UPC.

  3. All items in the series that come in the Blindbox will be associated with it through the Set Contains relationship  -

That way a user scanning the Blindbox's UPC (using the hobbyDB Apps) can find all the items in it and once opened can add her/his new item to their collection.  The user can also change a Blindbox once opened by reassigning it to the right Database Item.