Our free Swimmer script allows you to do a search-and-replace and find certain patterns or words in your InDesign file, and replace them with anchored image frames.
The Swimmer script has been updated to version 1.0.5 and now supports object styles, so you can apply a (variable) base line shift to the anchored images in the text.
More info, and a download link at the end of the following page:
https://www.rorohiko.com/wordpress/2014/06/24/peoples-choice-indesign-script-pepcon-2014-replace-words-images-vice-versa/