SAM App for Anxiety - an app to help with anxiety management
NHS Every Mind Matters - app designed to help with stress, anxiety and depression
Positive affirmations fortune-teller - create this fortune-teller using the instructions. There are some positive affirmations written on the fortune-teller to practice saying each day.
10 minute journal - print out a number of copies, fill in at the start and end of each day (should take 5 minutes each time) and see how it helps after a week or two - this is nice for adults too!