I have managed to lose an end game quest item. Is there any mods I can use for a dev console to spawn it?

I have spent about 2 hours looking for this thing and reloaded my saves twice. I have reached the very end of the game with only the final quest and nothing else. I have managed to lose one of the item needed for the final quest because I dropped it somewhere and I think it disappeared. None of the traders seem to have it. Anyway I can avoid rolling back like 10 hours of saves?