A small (300*300px) clipboard where you can store your notes, steamid, modelpaths, urls or whatever you want.
To use: bind a key to rs_clipboard using the console…
Example: bind F11 rs_clipboard
The GUI is made using derma which allows you to move the window around as you please. Window location and contents are saved locally to your data folder.
(More pictures available at garrysmod.org)