DIY

Precious Plastic exists to reduce plastic waste. Sometimes we do it through boosting recycling. Sometimes through new biodegradable materials. Some other time by adopting zero waste lifestyles. Whatever works.

I've thought this to be an interesting project in reusing plastics, I imagine they'll figure out their organizational issues

https://makezine.com/article/craft/homebrew-the-elliptigo-glide-bike/

When my friend Bryan Pate asked if I could build him an elliptical trainer he could ride outdoors like a bike, as a substitute for running, I was surprised he couldn’t buy it. Once I was convinced that it didn’t exist commercially, I set about designing one. After extensive 3D modeling, finite element analysis, and many design iterations, the ElliptiGO was born.

Here's a DIY example: https://www.instructables.com/wooden-kneeling-chair/

Anyone tried them or some other alternative chair like those exercise ball chairs?

Ball chair DIY example: https://www.instructables.com/How-to-Make-a-PVC-Ball-Chair/