For the parents of 10 year olds

It occurred to me this morning that if you are a child wanting to build a small diorama of a wind farm for a school project, you could readily convert a used electric toothbrush head into a tiny model of one wind turbine. 

Of course, since one of these lasts a very long time, if you want a whole wind farm, you had better start saving them from preschool.

You can thank me later...