What items/services are worth selling locally?

So im failing highschooler and im not sur ewhy but i want to make money like i want to earn it by doing things and becasue i have nothing better to do, well besides school.

I hav ealot of items but it manly junk i no longer use and im jus tnot sure how i might sell or what i could provide.

also i cant do yard work because there is barley any grass wher ei live and its super hot outside and my parents dont want me doing yard work for said reasons.