This tool goes through your current Google Search History, grabs all of your recent searches and turns it into an RSS feed. Would work best set up as a nightly/hourly cron job, redirecting to a file.
This tool is written in Perl and uses a few, slick, modules: WWW::Mechanize, XML::LibXML, and XML::RSS. I was influenced by the very nice webscrape tool when building this.
A sample, from my searches, can be found here: