I had a jar with a butterfly in it that I lovingly placed on the table in my home in Whiterun. I left and came back later to find it jammed into the ceiling and no matter what I do I can't touch it.

Make a savegame first.
1.tcl (in console command) -> Enter
2."Fly" to the object, the description of the object will appear (be patient) and catch it
3."Fly" to a space (in the cell) free enough without being "touched" by objects, floor, ceiling, walls, etc, to avoid glitches when you turn on the collision
4. tcl (in console command) ->Enter (to toggle collision ON again)
I hope this will be understandable
