TimeSticker is a widget which provides you same functionality as simple yellow paper sticker. You can write some short message on it and place it at home screen. Font size changes automatically or manually. Number of stickers is limited only by the size of the screen. To edit sticker after creation just press on it. Also you can set a time and date reminder for each sticker.

LAUNCH: This application is a home screen widget. To run it in the Android 2.3 or lower press on an empty space of the desktop and hold until a menu appears. There select "Widgets" and in the list of widgets, find the TimeSticker.
To run in the Android 3.0 and above, click Applications and select the "Widgets", and then look for the TimeSticker and drag it to the main screen.