Summer research internship.
Currently a junior in high school, I may not be 100% correct but it shouldn't hurt your application. Internships give you experience and even if you have doubts, you do NOT have to put it into your application. Just be sure to apply for internships that are related to what you like to do and your intended major or else it would make colleges think you are doing it just for applications, and that might give them the red flag.
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