Reduce, Reuse, RecycleI'll call this series "Reduce, Reuse, Recycle" and each post subject will be preceded by "RRR" to indicate it's part in this series.
While plastic bottles may not be good for food contact, here are some ways you can use those plastic bottles you cannot return for a deposit.
MUST SEE: Guy transforms plastic bottles into super strength plastic rope. This might be useful for transforming bottles into 3d printing string.
23 Bottle Projects. Jewelry holder, plant holders, Christmas tree, and more.
Below: Stuff holders.
Below: Small Easter basket.
Below: Hanging storage far right.
Instructions and better pic here.