Weekly Mass Resources for Kids: https://www.catholicicing.com/weekly-mass-resources-for-kids/
Holy Heroes Free Mass Prep Videos: A free resource that is available every week. Included coloring pages as well! https://www.holyheroes.com/MassPrep-s/57.htm
Free Weekly Mass Printables: Catholic Mom has some amazing free Mass resources for kids! For every single week, she has the gospel reading, a coloring page, a lesson plan, Mass worksheets, and a puzzle with a key. You can find all of her upcoming free weekly Mass resources here: http://catholicmom.com/kids/catholic-gospel-coloring-worksheets-sunday-mass/
Read Your Kids A Children’s Sermon! Sermons 4 Kids provides a new sermon that is totally kid friendly each week, and if you scroll to the bottom of the page, there are also links to matching coloring pages, crossword puzzles, and also a power point presentation! All for free. https://sermons4kids.com/
Find Activities Relating To The Gospel For The Week! The Catholic Toolbox does an absolytely amazing job of rounding up all the relevant Mass resources for each week.
https://catholicblogger1.blogspot.com/p/gospel-for-mass-year-a.html