MAYFIELD HEIGHTS, Ohio (WJW) — Even the tiniest Ohioans are getting into the Halloween spirit, with the kids at Cleveland Clinic Children’s NICU at Hillcrest Hospital recently donning spectacularly sweet costumes.

A grandmother of a former NICU baby has been crocheting holiday hats for the last decade, bringing joy to all involved.

This year’s hats included lions, tigers and cute bugs.

See the adorable costumes in the gallery above. The photos are all courtesy Cleveland Clinic.