PB is a group dedicated to encouraging a zero-waste lifestyle. This is a very small yet meaningful initiative. 

Around CNY, they run a cookie container re-use programme where they collect used container for distribution to bakers.

In 2021 they put together a list of bakeries (see link below) that would accept these containers making it easy for container donors to contact recipients directly. 

We don't know what their ability to maintain this programme is from year to year but hope that they do. Follow them on FB for updates.