Does anyone have a good science fair project idea?

Anyone have a cool idea for a science fair project for an 8th grader?

• it has to be an experiment with like a hypothesis and data and conclusion and stuff, so it has to be possible for an 8th grader to test

• Answer:

  This is what I did for my science fair project: Get two peices of bread wet one, but not too wet, and put it in a dark cool place inside a plastic baggie (ex: cereal cupboard) Get another peice and leave it dry, out of the bread bag, and put that in a baggie in the same dark, cool place. The experiment is to find out which peice of bread molds faster. It's simple and easy because all you have to do is put the bread in there and check it every five days and write down what they are doing so far. This is what I did and i got a A on it.