Here's how to get any Daedric weapon in the game without having to trudge through a bunch of nasty dungeons.

Open up the console by pressing ~ (tilde key) and enter the following for each weapon (must be exact), then hit Enter:

player -> AddItem ''daedric club'' 1
player -> AddItem ''daedric arrow'' 1
player -> AddItem ''daedric_crescent_unique'' 1
player -> AddItem ''daedric battle axe'' 1
player -> AddItem ''daedric dagger'' 1
player -> AddItem ''daedric claymore'' 1
player -> AddItem ''daedric dagger_mtas'' 1
player -> AddItem ''daedric dagger_soultrap'' 1
player -> AddItem ''daedric dai-katana'' 1
player -> AddItem ''daedric long bow'' 1
player -> AddItem ''daedric staff'' 1
player -> AddItem ''daedric warhammer'' 1
player -> AddItem ''daedric war axe'' 1
player -> AddItem ''daedric mace'' 1
player -> AddItem ''daedric longsword'' 1
player -> AddItem ''daedric tanto'' 1
player -> AddItem ''daedric warhammer_ttgd'' 1
player -> AddItem ''daedric katana'' 1
player -> AddItem ''daedric dart'' 1
player -> AddItem ''daedric spear'' 1
player -> AddItem ''daedric_scourge_unique'' 1
player -> AddItem ''daedric shortsword'' 1
player -> AddItem ''daedric wakizashi'' 1
player -> AddItem ''daedric wakizashi_ttgd'' 1

Credit to Gamespot