Pley’s has big ambitions for renting the small blocks. From their site:
Pley is a socially-responsible company that aims to change the way families consume products and spend time together. Leveraging collaborative consumption, we aim to raise a more creative and skillful generation that follows the principles of open-ended play while emphasizing the benefits of sharing, reducing waste and giving back to the community. Every set that Pley rents saves a tree over the lifetime of its rental. Todate, Pley had reduced waste by eliminating the wasteful production of 90,200 pounds of ABS plastic which resulted in a reduction of 3.9 million pounds of C02 emission.
And I just think this is cool.