Ejecter is a little tool that makes it possible to unmount external devices and eject CD-ROMs without having to right-click on the device icon (either on the desktop or in Nautilus). It sits in the background and shows an icon in the system tray when one or more peripherals are connected to your PC: once clicked, a window appears with the list of the devices (volume name and device type, and much clearer than the similar thing available on Windows) and the related eject button. Being written in Vala, it is translated into C code and then compiled. This means that it's lightweight and consumes little memory, does not require a full VM like Python, and has no strange requirements to run (just GLib/GTK).
gSmile is an emoticon manager. It lets you store your emoticons and find them quickly whenever you need one of them. You can organize your emoticons in many folders (possibly nested), and with drag-and-drop, you can quickly and easily insert the right tag (with the emoticon URL) in your Web browser.