The following are three websites that have a number of projects. Remember that if you choose a project, it needs to have a independent (manipulated) variable (something that you are changing) and cannot just be making something. Some of the projects you might find online have independent and dependent variables and others don’t, but even if they don’t, they can still sometimes give you ideas.
Additionally, if you are picking a project from online, you should try and think of a way that you can change it a little to make it unique and yours.
This website has a survey that you can go through which helps you to come up with ideas that match your interests.
Search or browse by topics.
Search or sort by grade or topic.