Wunderlist New Tab
Create a to-do list in a separate tab. This extension gets very good reviews.
https://chrome.google.com/webstore/detail/wunderlist-new-tab/fgikemaeelgbhjnhnnahcpkjpafaeion
Todoist: To-Do list and Task Manager
This is a very popular and highly rated to do list.
https://chrome.google.com/webstore/detail/todoist-to-do-list-and-ta/jldhpllghnbhlbpcmnajkpdmadaolakh