most will depend on hobbies, but some are useful all together. Idea from Most/Least useful HS classes.
Most- Speech, Debate, Journalism
Least- Yearbook, Computer Lit (learning to type)
My most useful one was JROTC. My college admissions director told me that that was the thing that changed me from a maybe candidate to a yes. She said it showed leadership
Honestly, none of my ECs are very useful. I do them because I enjoy them…I’ll go ahead anyways though 
Most - Ice Hockey (Varsity and Travel) and Community Service Club
Least - National Honor Society and Foreign Language Honor Society…and all the other useless Honor societies that I’m in