The search box in Firefox (located in the upper right corner) can be very useful if you put it to good use. To add some search engines you could go to this site that Mozilla has put together or there is an even easier way now.
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 screenshot that I took above and you’ll notice that you can customize the icon that is associated with a search.
Before this came extension came around I was able to find most of the search engines that I wanted to add by using this site. I love what a simple thing this extension does yet it is so incredibly useful. This is definitely something that should be built into Firefox.
Thanks for the tip Chris!