Quicklist

Quicklist is a simple, fast reminder toolbar extension. Create notes and tag pages without cluttering your bookmark lists. Tick them when they're done and they disappear.

Quicklist stores the items in Chrome synced storage, so your items will be shared across all the Chrome installs you use with your account.

Quicklist does no logging, no measurement, no timing, no nagging, no emailed reminders, no nasty little popups reminding you that you've not done anything productive today.

It just sits there remembering stuff for you.
It comes wrapped in nice friendly colours.
It's really simple to use.
It wants to help you and make your life better.

You should definitely install it.