With the console, you can place things without the headache of having them "explode" or fall onto the floor when you reload your save or re-enter the building, but it's VERY time-consuming if you're picky about placement.
Basically, you drop the item you want to place. Then open the console and click on it (it helps to be in first-person camera for this). The object ID should show in the center of the screen, if it starts with ff you probably clicked an object. If not, you probably clicked the floor.
Then you need to get its current position, using the getpos command: "getpos z" gives you its distance above the ground, "getpos x" and "getpos y" give you horizontal position.
First you probably want to set the item upright. You do this by doing "setangle x 0" then "setangle y 0" and "setangle z 0". The object won't re-orient until you move it, though, so don't worry if you don't see anything yet. (if you want to turn the object to face a different way, you can play with the angles... for example, if you want your Dibella statue to face a different direction use "setangle z 90"--or whatever number gives you the result you want)
Next you actually move the object, using setpos command to move it around. Like, if earlier when you typed "getpos z" it said the object's Z position was 15, and you want to move it up, you type "setpos z 25" and it will move up to 25. Same goes for x and y for moving it around horizontally.
Another useful command for doing this is tfc. This stands for Toggle Flying Camera, and it lets you move the camera around wherever you want instead of just where your character is looking.