We dont mean it as negative.
I personally just dont think that you should add anxiety or stress about extracurriculars because what you are doing now will get you into a college.
You will have choices and your mental health should weigh more than trying to pad your application to portray someone you are not.
Be genuine and find the right school for you.
Another thought — I don’t know what part of the country you live in or what kind of access you have to hiking areas during the summer, but many organizations recruit volunteers to collect scat of specific species they are studying.
A coyote scat study wrapped up recently in Los Angeles, for example.
Here are a couple others I found with a quick google search. If this is something you think you could do, you could look for projects seeking volunteers near you: