Adding banners, search boxes, etc.. to individual blog pages

I would like to add my own custom search boxes, banners etc.. to my individual blog pages, but at the same time, not have them appear multiple times (under each blog entry) on my main blog page.

How may I accomplish this?

http://www.beyourowndetective.com/blog

Fred