Advent recounts and remembers the events prior to Jesus' birth. The colour for advent is purple, so you could decorate your house with purple, including purple lights.
For Advent Calendars, have a look at some of these links:
Busted Halos' 2016 Advent Calendar & InstaAdvent Photo Challenge
Sign up to hear an audio message each day
Advent Word - A Global Advent calendar
Ideas for different Advent Calendars
Make your own advent Calendar
Count up to Christmas - Instead of opening daily doors with pictures or retrieving small gifts or candies from pockets, adults and children can mark the day-by-day journey to Christmas by daily praying/drawing with a calendar template.
Here are some links to some other advent ideas:
All the Colours of Christmas Advent Devotions & scripture readings
Uniting World - Love over Tinsel: 25 Acts of Advent
50 Advent Acts of Kindness
All the Generations - Pray As You Go Advent Retreat
Truth in the Tinsel: An Advent Experience for Little Hands
Using a Jesse Tree
24 things to do in Advent - Printable booklet for families
Advent wreath prayers - for the home
Set up a progressive creche
5 Household rituals for Christmas Eve
Christmas Celebrates the birth of Jesus. Christmas starts on December 25 and lasts through January 5.
Here are some links to ideas for Christmas:
Alternative Christmas Gift Ideas
Paperless Christmas - The Road Movie - has nine fun short videos that tell the Christmas story plus downloads & other extras.
Print & Colour Nativity Star
Keeping Christmas - All 12 Days