In the interests of removing plastic from the environment you've probably done your best to eliminate plastic drink bottles and plastic bags from your home. However if you still find some sneak into the house you may be interested in an email forward received recently demonstrating a novel way to re-use bottle tops to create an airtight seal on a plastic bag. [Test the bag for any holes first]
Insert the plastic bag through the neck and screw the top – to seal.
The bottle is made to be air-tight, such that water will not leak, the secret lies with the top and screw!"
[Forwarded by S Best]