For my EA I created a local level NGO at my school, called the Student Human Rights Education Network (SHREN). I analyzed the effectiveness of different political systems and leadership styles through my creation and leadership of this NGO.
But there are so many other things you can do! A friend of mine looked at Australia's Border Force Act and interviewed a politician from each major political party.
As long as you are personally involved in the process - that's the key. Try not to do simulations, as these are marked harshly because they don't show full involvement, no matter how good your analysis may be.