The next time you have an idea, but then think “surely no one would possibly buy that,” remember that Gwyneth Paltrow is selling packs of stickers – yes, stickers – that she says “promote healing” for $60 a pop for packs of 10. Everyone’s favorite homeopathic shuckster invokes science to claim that her $6/a sticker scam is based on tech:
Vox busted them on claiming it was based on NASA technology, too.
Last I looked, their inventory was sold out. People buy this stuff. Whether you see that as exploiting easily-mislead simpletons or cashing in on homeopathic faddism is up to you. But it means that your idea probably isn’t stupid, either.