For compulsive groomers who either spend time off-grid or just want to stop consuming toxic batteries, the PowerPlus Piranha Dynamo Shaver may provide a solution.

This wind-up rechargeable shaver will give you 2 minutes of shaving power for every 1 minute of winding.  Not for you Grizzly Adams types but a potential travel shaver for normally furry humans.

£24.99 @ earthwhile.co.uk