https://www.cnet.com/news/nasa-mit-test-wild-shape-shifting-airplane-wing/

The hand-assembled prototype wing, which went through testing in a NASA wind tunnel, is made up of hundreds of small identical parts. MIT describes each injection-molded piece as "essentially a hollow cube made up of matchstick-size struts along each edge."

While the test wing was assembled by hand, the researchers say the process could be automated.