Why do people always send us tips about vibrators? Could it have anything to do with the controversy over the ShePhone, supposedly designed by our editor Mia?

Well, whatever the reason, these products do tend to come our way at regular intervals. Today, there's one for the environmentally conscious -- the solar-powered bullet vibrator from Libida (hmm, I wonder when that domain name got taken up), that charges in sunlight or artificial light. Priced at $29.95.

One user on the Libida site suggests keeping it on your window sill so that it's always charged up and ready (and meanwhile can satisfy any mild exhibitionist urges).

Thanks for the tip, Charlie!