New ECs to try?

I am about to finish my sophmore yar (southern hemisphere perks) and thinking about what could I add to my ECs
-Secretary-General at my MUN club
-participated in debate, panamericans this year (didn’t do well tho) and prob going this year again
-school orchestra since 4th grade (planning to apply to the national one), LCM violin diploma level 8
-swimming team, went every year to the schoo level competition (no medals tho)
-head girl in my grade
-2/86 in the grade
-going to the national children’s hospitals saturday mornings and hang out with kids who have been burned, gone two weekends to a poor area in town and stayed there the whole day
-prob starting an english teaching project soon
languages: english, chinese, spanish, french (no subject test grade yet)
vacations: going back to China, CTY, DukeTiP and debate panamericans

I have two years before I apply for college, any suggestions?

well probably 1/86, don’t know yet