They did all of these things! The most common practice was to dress up in masks and scary costumes so that evil spirits would be tricked into thinking they were not people but fellow ghosts instead! People also used false names or changed their voices. A hollowed out turnip was carved with a spooky face and lit from inside. This was placed in windows or doorways to frighten away evil spirits.
Games were an important part of the celebrations, such as apple bobbing. People also celebrated with special foods including barmbrack, a sweet bread made with dried fruit. Small objects were wrapped in fabric and baked into the bread. The object you found predicted events for the year ahead: a ring meant you would marry and a coin meant wealth! There were many ways people tried to predict the future at Halloween, including placing nuts in the fire, throwing balls of wool out the window, peeling apples, and pulling up cabbages while blindfolded!
Some of these Halloween traditions were carried overseas by Irish migrants and became part of the traditions in their new homes. Can you think of any other countries that celebrate Halloween?