Oxford based EBICo Ltd is a gas supplier with a difference. Visitors to its website can choose to send an unusual Xmas gift to their loved ones. For a payment of little over £5 you can purchase for your husband or wife the rights to a tonne of carbon. This tonne of carbon is retired from the EU Emissions Trading Scheme and a certificate of ownership despatched to your loved one.
Thank you to Colin for drawing this to my attention.