Tux Paint - Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6).
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Lil' Picasso - Lil Picasso is a coloring and creativity package for children.
Standard Notes - A safe place for your notes, thoughts, and life's work
Painty - Kid, if you have a dream to paint the best picture in the whole world, this is the place to start...
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.