During his DICE 2012 keynote speech, Howard revealed that after development of the game finished, the studio did an internal 'Game Jam'. Every member of the team was given one week to "do whatever you want, and put it in the game".
The results ranged from dragon mounts and a werewolf skill tree, to building your own house and activating dragon shouts with Kinect.
"Everyone on the team said, 'I have to preface this with, these are all experiments that we did in a week'," Howard said to introduce the video.
He added: "How much of this stuff sees the light of day? To be determined. Could it be in a future DLC? We don't know. Could various parts of it be released for free? We don't know."
Bethesda recently launched the Creation Kit and integration with Steam Workshop for Skyrim, enabling the creation and distribution of user-generated content. Valve released its own Portal 2-themed mod, 'Fall of the Space Core, Vol. 1'.
Patch 1.4 for Skyrim will also be releasing soon, addressing a number of bugs, glitches and broken quests. It will be available on Xbox 360 in the next 24 hours, before releasing on the PlayStation 3.
The Elder Scrolls V: Skyrim was released for PC, PlayStation 3 and Xbox 360 in November. It was recently named as the fastest-selling PC game on digital distribution service Steam.
> Read our review of The Elder Scrolls V: Skyrim
> Read our review of Portal 2
Watch a video outlining Skyrim's Creation Kit and Skyrim Workshop below: