Convert those old bottles into a fence. Here is how.
What you need
plastic drink bottles
garden twine or similar
knife or strong scissors
To make my little fence I used 500 ml drinks bottles – 2 bottles in height just as a little edging to my veg patch you could make it as high as you wish.
Firstly cut the bottom off one bottle. I used an old pair of scissors for this.
Take the cut off bottle and push another bottle inside it neck up – so that you have an elongated bottle shape. Repeat until you have enough for the length and height you require.
Cut bamboo canes to length + 6 inches for pushing into ground (you could also drill these into a length of wood of you were working on solid ground).
Keep doing this until you have required length.
To add extra strength bind the bottles to long horizontal canes with twine (see pic)