Need a quick an easy way to see what two plus two is? I am pretty sure the answer is still four – but I could be wrong. That is why I like to have the Calculator Bar handy. This Firefox extension gives you one of those “number adding machines” on top of your status bar.
Then again, if you don’t want to bother with an extension you could always just type 1+1 into that Google search box [...]

Need to add another search to your search box in Firefox – but don’t know how to create it by hand? No worries there, this should solve the problem ASAP.
The Add To Search Bar extension lets you right-click on any search box and it will give you an option to add that site’s search field to the search box. The quick 3-step process of adding a search field can be seen in the screen shot that I took above [...]