A Joomla! module that will make an AJAX search field available wherever you want it. Shack Search sends an AJAX query to com_search after typing in 4 letters in the search field.
Other modules by Brainforge.UK include a HikaShop Product Search Module.
This module provides a simple first step upgrade for sites upgrading to Joomla 4. You may encounter issues which did not arise during development. It may not be suitable for new Joomla 4 sites, requires com_search.