These adhesive decals stick to any flat surface and are even PVC-free! Why opt for green energy if you can't remind yourself and your guests about it every time you turn on the light? I'm serious.
h/t CleanTechnica
![](https://grist.org/wp-content/uploads/2011/12/solar_parity_map_5501.jpg?quality=75&strip=all&w=550)
These adhesive decals stick to any flat surface and are even PVC-free! Why opt for green energy if you can't remind yourself and your guests about it every time you turn on the light? I'm serious.
h/t CleanTechnica