Did you eat any junk food over the holidays?
What was your routine like?
Is your Christmas tree still up?
Who did you spend your holiday with?
What was your best memory over the winter holidays?
Did you miss your classmates?
How much time did you spend on the Internet?
Did you go for a walk in the park/forest?
Did you learn any new information/skills?
Did you watch any films/series?
Did you exercise?