one-of-a-kind things

noun
Tacked by no one yet
Definition in:
  1. A unique entity or item that is unmatched or unparalleled in its characteristics or attributes, often considered irreplaceable due to its distinctiveness or rarity.

The artist created one-of-a-kind things that were unlike anything anyone had ever seen before.

Start tacking to remember the definition of "one-of-a-kind things" the next time you hear it or read it.
Yakety Yak