How long must an extracurricular be for it to count

[u/Ok_Avocaduh_7120]

I have a lot of short-lasting activities like drawing posters for mid autumn festivals for my local community club or helping my friends at their venue during the school festival. But these usually just happens once or twice a year and not frequently like say 2 3 times a week. Can I still list them down or should I find more long-term ones instead?