There are tons of clubs for such things. My kids are in a homeschool music program (and learning piano and, until recently, bagpipes); half of my kids are playing competitive sports via homeschool programs that compete with other high schools; one is getting his certification as a welder (as part of a State program that pays for it if one is still in high school). Because class times and locations are more flexible this opens up far more possibilities for extra curricular activities.