Only the imagination of children and 500 rolls of duct tape were required for the parking lot at Hilliard Heritage Middle School, 5670 Scioto Darby Road, to transform into a showcase for medieval castles, race cars and biplanes Oct. 6 at Hilliard City Schools’ annual Cardboard Challenge.

Students, sometimes accompanied by their preschool-age siblings, collaborated to make from cardboard whatever their creativity conjured.

“It’s a great day for families to connect, use their imagination and create,” said Hilary Sloat, principal of Hilliard Horizon Elementary School.

It was the fourth year for the Cardboard Challenge.

Similar events were held at other central Ohio school districts and throughout the country, according to Sloat.

Cardboard of various shapes and sizes was collected for the past month to provide the stock for children to use. The cardboard was bound with hundreds of rolls of duct tape.

Aaron Kuck of Hilliard helped his daughters made a plane.

His 7-year-old daughter, Amelia, became enamored with Amelia Earhart when she learned she shared the same first name with the woman who was the first female aviator to fly solo across the Atlantic Ocean and whose plane disappeared in 1937 while attempting a flight around the world.

“They wanted to build an airplane and that’s what we did,” said Kuck, who applied final touches while his Amelia, 7, and Anna, 9, were seated inside the plane.

Lexi Crockett, 5, and her sister, McKenna, 3, donned Ohio State University colors while making a castle.

The Cardboard Challenge was from 9 a.m. to noon, well before the Buckeyes’ 4 p.m. game against Indiana.

“This is the second year we have come; our kids have a lot of fun,” said Heather Crockett, the girls’ mother.