Extension: image fetcher
Version: 0.3.1
Author/Extension Homepage:
https://addons.mozilla.org/en-US/firefox/user/863994
Mozilla Download:
https://addons.mozilla.org/en-US/firefox/addon/6716
Description: "When overing an image with mouse, adds a "save" button in the corner of that image. The aim of this extension is to make it more easy to download images: you don't have to right-click each time you want to download an image from a web page."
Notes: Not earth shattering, but it saves your fingers from some right-clicking.