Sticky Screen is like a simple online version of the yellow sticky notes that you can set as your browser homepage.
You just have to type something onto the sticky note and set that website as your browser home page. No need to register anywhere and there’s no save button.
The yellow sticky note will show up whenever you start the web browser. The magic is due to a cookie that gets saved locally so the sticky note will change to the default one if you decide to clear the cookies someday.
For something more permanent, check these Post It Notes for Desktop.