Usborne Books have created a fantastic resource called the Unworry Activity Pack. It is free to download and may be a helpful resource for home if you have a child who is inclined to worry too much. It is a collection of fun, mindful activities to help children and adults UNWORRY. It’s full of things to calm you down and distract you, and places where you can put your worries, instead of letting them "hang around in your head"
Here is the link to the free download - https://usborne.com/media/CategoryLandingPanels/mental_health/UNWORRY_PACK_for_web.pdf