Is it an art class, robotics class, programming class, physics class.....
final project for university degree, final project for a class, for high school.....
Put the forum into the context, then and only then can you get some really worthwhile help. Like I have seen many others told. You get what you pay for. Here you are paying nothing, so you might at least come with a well thought out question. In other words tell the forum your budget, objectives, time constraints, experience, and what you have already come up with, things like that.