This was half of a commission with a cosplayer who wanted a "glom" hat of Yachiru for himself and his friend.
The hat is made to look like Yachiru is gnawing on your head. Underneath her bangs are some little hands as well to look like she is holding onto your head.
The commissioner had lots of ideas for more glom hats. I might consider making some if I get the energy to make more hats.