Don't worry, minimal craft is required for those of you who might think this activity involves something pinterest worthy. Simply find (or save) an empty jar and make sure it's clean and dry. In that jar, write down lots of different ideas of things to do on strips of paper. Fold up your paper strips, pop them into your jar and screw shut. You can decorate your jar if you want to, but that's not really necessary.
Next time your child says "I'm bored", present them with the I'm Bored Jar filled with all sorts of wonderful activities to keep them busy. Here are some ideas of things you can write down on your strips of paper, otherwise brainstorm with your child and find more interesting things to add to the jar.
25 ideas to get you started:
Write a letter to your Grandparents
Learn to count to ten in French (or German/Italian etc)
Draw your favourite animal
Write a postcard to your cousin
Learn a new dance move
Write down a list of the countries you want to visit and why
Watch Tom and Jerry on YouTube (or Donald Duck, Daffy Duck, Mickey Mouse etc)