The Contact form blocks module makes your site-wide contact forms available as Drupal Blocks.
Using this module you can show your contact forms at any place where you can show a Drupal Block. For instance you may add a contact form to the right sidebar of your website which should be shown at every page. Or you want to add another contact form (aka category) to a certain node only. Add the contact form block to the content region and use the Block visibility settings to hide it from all pages but that special one.