Updated: Apr 24, 2020
Here is a selection of online (and a couple of offline) resources which may help you mark the season of Advent in a meaningful way. And if you happen upon something else that you find useful, please do share it.

Pray As You Go Advent Retreat
A series of recorded reflections from Pray as You Go, which is rooted in the Ignatian tradition of spirituality. https://pray-as-you-go.org/go%20deeper/
Sacred Advent Retreat
Sign up for daily emails from Loyola Press, acting as a prompt to pause and reflect.
https://www.loyolapress.com/our-catholic-faith/liturgical-year/advent/sacred-advent-retreat
Advent Conspiracy
Sign up to access a bank of resources, encouraging you to celebrate Christmas humbly, beautifully and generously - including a series of daily reflections featuring a contribution from our minister.
Tearfund Advent Calendar
Sign up to receive daily emails containing a thought or reflection from around the world, all to help you refocus on Christ.
https://www.tearfund.org/en/about_you/resources/christmas/
Injustice Advent Calendar
Sign up for a daily email from Traidcraft, each one including a five minute action you can take to work for justice.
https://traidcraftexchange.org/injustice-advent-calendar
Reverse Advent Calendar
This is one you can create for yourself by setting aside an item of food each day, and then donating them to a local food bank or similar organisation - perhaps the Welcome Project collection point at church.
Random Acts of Christmas Kindness
Another one to make for yourself, by committing to perform a simple act of kindness each day of Advent - choose your own acts of kindness or get ideas from friends.