The htmLawed module enables the use of the htmLawed(X)HTML filter/purifier with text/input formats.

This module lets you use very fine grained html filtering.

See /docs/common-htmlawed-settings for common settings.

Rabbit Hole is a module that adds the ability to control what should happen when an entity is being viewed at its own page.

Also see Internal Nodes

Date Popup Authored provides a jQuery UI datepicker for the Authored on date field found on node submission forms.

Create administrative panes that can be injected just about anywhere.

"Panels are great, but how do I change this one page?"

From the project page: "Provides a new Forms API element which is a select/radios/checkboxes element that has an 'other' option. When 'other' is selected a textfield appears for the user to provide a custom value."

Modify the default Panels markup. Use with Fences for ultimate control.

I can't believe that I haven't heard of this module until now. Maintained by Joachim Noreiko, a very prolific module author, this module lets you create views where the values can be edited inline.

Joachim's demo vid (~5 minutes) https://www.youtube.com/watch?v=g_D4z4Bw6iw

Otherwise known as ECK, Entity Construction Kit allows the creation and management of new fieldable entities in a UI.

Entertaining presentation on usage from DrupalCamp London 2014: http://youtu.be/hhUuv1cEgVY

Lets you use tokens to embed video and have the ability to add a button to the WYSIWYG for easily adding a video (for those to0 lazy to type).