Blade117 mentioned Calislahn's house mods. Calislahn also released her mannequins seperately.
Here is a link:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=6612
The included plugin is designed to allow modders to add her Better Bodies compatible mannequins to their mods,
but can also be used ingame as a ready source of mannequins for players to use.
They can be found ingame in a shack in Hla Oad, where they were put in storage. They are free to take.
You can add the plugin to your game, then just go to Hla Oad to take them.
Then you can place them wherever you want, and just equip them with clothes and armor.
Another mod you might like is "Weapon Rotate", which can be found here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=2509
It will allow you to mount your weapons on special display racks.
It includes a variety of them, from floor stands to wall mounted racks.
Also made by the same authors is "Book Rotate", found here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=1230
It will allow you to place and align books properly on shelves. A must have for book collectors.
You might also be interested in "Book Jackets", by Daleth, which provides unique covers for all the game's books,
and is fully Book Rotate compatible. Here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=4054
You'll also want "Better Books for Morrowind", by William the Taffer.
It will improve and replace the graphics for every book not covered by Book Jackets, including mod-added ones. It is here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=2332
Bottle Rotate, by Maboroshi Daikon (one of the co-authors of Book/Weapon Rotate) can be found here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=2538
It will allow you to position bottles for display, such as bottles of wine in a wine rack, using the same method as Book Rotate.
Unfortunately, as I recall, the copy of it available on Planet Elder Scrolls is "Dirty", and needs to be cleaned,
and to have it's file header updated. This can easily be done with TESTool if you know how.
If you don't, reply and I could upload a cleaned copy somewhere for you.
Lastly, I can also recommend "ShieldPlacer", by Monica21.
It will allow you to position shields wherever you want, like hanging them on doors and walls. It is here:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=2449
With these you will be able to collect and display nearly anything, wherever you wish.
They are must-have mods for collectors and packrats everywhere, myself included!
I hope this has been useful. ^_^