This amazed me when I saw it .... so much so, that I've started collecting 4 pint milk bottles for myself! (smaller than the USA versions but the end result will be as good!)
Milk Bottle Igloo
A couple of pointers...
Ensure the bottles are
sterilised so that bacterial growth is avoided one the lids are in place
The
jumbo sized storage bags are useful for keeping things tidy until enough bottles have been collected.
This idea could be applied to lots of 'house' shapes and is light enough to be taken outside for play!
If you have any novel ideas on how they could be used... post away!