A simple script and editor that can be used to track To Do items within the inspector. Unity 5.5+
To use this script, add the "ToDoList" component to any game object. When the object is selected you can add, remove tasks and set them as complete/incomplete. For bonus points, you can turn your ToDo List game object into a prefab, so it is accessible from any scene just by selecting the prefab in the project hierarchy!
The YouTube video below has a brief tutorial on how to use the asset. Any questions, suggestions of feedback feel free to get in touch via this form: https://goo.gl/forms/34iDmMnMT3LYeAw33