The Quick Search Widget provides a small, basic search form that can be displayed anywhere on a website.
IDX Search Widgets
Add home search functionality throughout your site using any of 3 IDX widgets: map search, basic search, or omnibar search
Lessons
Quick Search Widget
Create a Map Search Widget
Place an interactive map search utility on any page of your website.
WordPress Omnibar Search
Add a simple, single field search form to your website.