In dashboards I found out that it's possible to include basic HTML for a particular panel (http://docs.splunk.com/Documentation/Splunk/4.3.3/Developer/AddHTML), which can be really handy to create a display in a particular way.
What I am looking to find out though, is it possible to include searches and display the results in HTML? I'm looking mainly at single value searches, so the HTML wouldn't have to deal with tables.
One approach would be to use the Splunk JavaScript SDK to do your search and format your results in your own HTML page.
I would recommend to look at the "HTML" module in the Sideview utils app. The app ships with examples (check out its views) that show how to integrate search results into HTML.