Laura and Chris Moriarity started the Million Waves Project, a nonprofit that recycles ocean plastic into 3D-printed prosthetic limbs for kids in need. Chris was inspired by the idea back in April and within 2 weeks, he and his wife got the project going.
They collect the ocean plastic themselves, cut it up and feeds it into a paper shredder, then to a 3D-printer. They use an app to connect with people who need prosthetics so they can custom create the limb to their measurements. And because their materials are cheap, each prosthetic only costs around $45!
Project Website - https://www.millionwavesproject.com/