Here are some hanging charger solutions that should make sense. Obviously soliciting solar energy, these Sunbox solar panels were designed by Jinsic Kim which you can place beside your daily laundry.
They are lightweight and feature an electric connector, an insulation hook and two pieces of solar mirror. The only problem is that this seems to be a concept for now but it would be pretty neat if these things would really become available in the market.
(Source) Trend Hunter