What do practitioners of the Muslim, Christian, Buddhist, and Hindu faiths, and all their offshoots, cults, etc. actually do?

They pray, chant, sing, dance, conduct rituals, read about and discuss their beliefs, pass laws and uphold traditions they believe reflect the will of their gods and goddesses, that sort of thing. Some, though not all, have requirements or expectations of practitioners doing community service of some sort, or at the very least, engaging in what the church fathers of their particular faith deem to be meaningful work. Curses and blessings are just different sides of the same coin in most traditional cultures, including Christian ones, so I don't think wiccans and witches have the market cornered on that.

So the simple, short answer is, wiccans do what practitioners of other religions do.