Google Images direct link
NOTE: Since July 2016 this script is unmaintained. It is here just for historical purposes and to let other people fork it. Adds direct links to images and pages in google image search
Google Search - Time selections and EU popup
Add extra time ranges to Google Search (from 6 hours to 8 years), and as an aside, always show tools and remove any search result redirects (Search engine only) if nothing else has removed them.
Page Scroll Marker
Adds translucent bars to the top and bottom of the viewport, which indicates the previous viewport position when the page is scrolled. This tool will prevents you from getting lost when you press the Page Up/Down keys.