Share Our Plastic is a telegram group where members share plastic materials which are either new or used.

The most popular items shared in the group are plastic bags and  plastic cutlery. However all manner of disposable plastic is seen there including  jars and snack containers.

Update

As of July 2023, this group has become very inactive so it is no longer a top recommendation. The listing remains here for info in the hopes it will get more active in future.