A module that does not seem to be really useful at first sight, but still has its usefulness.
This module allows you to choose what you want in the display of a text field, regardless of what you used in the input.
For example, in a teaser view, you can filter out the images.
In my example, I use an accordion view in the CKEditor. Pretty, but in print view, the contents of the collapsed tabs are not displayed.
So, I create a new display mode, which I use to exclude the accordion scripts via simple HTML. The full content is now visible.
I just have to make another view (or something else like Display Suite) that shows this view.