If you want a solar powered helicopter, it is obvious that it needs access to the sun. One way is to put it on top of the item to be powered, another way is to have the item be transparent. I much prefer the transparency route, because beside it’s ability to gather the sun’s power, it is also very close to invisible. Power of invisibility or the power to fly? Tough call.
Product Page (£21.99, about $44)
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