STEM and STEAM initiatives have caught on around the country, focusing on the need for creative problem solving and future leaders in the math, science, and engineering fields. Pair a fun design challenge with recycling and creative kids, and you end up with a STEM project that fosters learning and a love of science.
https://www.scholastic.com/teachers/blog-posts/meghan-everette/recycling-regatta-engineering-design-challenge/