The BBC has produced a series of 30 minute mindful escapes. These could be used with children but are also perfect for adults.
Start a journal
Journaling is a highly recommended way to maintain well being for children and adults. This can be done in many ways. Here is one guide to help you get started: https://thewritepractice.com/how-to-write-a-journal/
There are also some pre-printed journals that may help to guide and shape your thoughts and reflections:
https://www.happyconfident.com/shop/journals/super-journal/ - children's journal
https://www.amazon.co.uk/Wellbeing-Journal-Creative-Activities-Inspire/dp/1782438009 -adult journal with donations to Mind
My hidden chimp
With books aimed at children and adults this series looks to help us all deal with our inner chimps!