Science Fair Project Ideas?

It is time for the most tiresome period of the year; the Science Fair Projects Period. I need ideas for tomorrow. I've got a few, but I'm pretty sure the will like none. Anyone can give me other ideas? Let them be from 10 - 12 grades. Advanced ideas please, my school is very picky. I've searched loads of stuff in the internet, but it's always the same silly unadvanced stuff.

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