Jimbo, here is some actually helpful advice. (
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There are also insight days and shadowing programs at firms, try to apply to that.
Apart from that, outline on your CV extracurriculars that may be related or just demonstrate high achievement in them. For that and work experience, demonstrate leadership and teamwork skills which are actually taught in many part-time jobs. Do you have the option of volunteering?
Start working hard and researching and I'm sure you can find something.