what do you need to do to frighten evil spirits away
We need to put on bright costumes and masks and dance to scare away from evil spirits.
In many countries fireworks are not used at halloween; where they are it is to frighten away evil spirits.
Evil spirits
No, they are used to scare people in a funny way.
An old legend is that people dress up as monsters to frighten/keep away evil spirits. I would try dressing up as a fairy princess, the evil spirits will be afraid of you girlie-ness.
To scare aTo scare away evil spirits way evil spirits
Yes. How much you follow Sila this much you will have a power to call to a evil spirits. Warning! Don't call to a evil spirits who lives away from you. He will come easily will not go away.
GOD
to ward off evil spirits
Ranofer wore an eye of Horus amulet to keep away evil spirits. The eye of Horus was believed to provide protection and ward off evil influences in ancient Egyptian culture.
they were originally for scaring away evil spirits, but now they are just for entertainment.
Possibly to warn away evil spirits.
they built them to scare the evil spirits away from the villagers