Jeannie Beck receives more clothes than she can sell at her secondhand women’s clothing shop, La Loft. Her solution? Donating the clothes to Ukraine.

“I had to do something with my clothes,” Beck said. “I’ve probably sent 30 boxes to them.”

Give Back Box is a program that repurposes old cardboard boxes to send secondhand items to charities. Anyone can purchase a shipping label — most average around $20 — to donate unwanted items to…