The Miniaturizer is one of Aviva's most notable inventions. It is capable of shrinking various objects to nearly microscopic size, hence its name. (be it organic matter or technical) It can also increase objects in size to nearly gigantic levels. It was originally created for the Kratt brothers, specifically to aid them in further biological study. Though it was first seen in Mom of a Croc, it was officially introduced in the episode Mystery of the Squirmy Wormy.