Hey, thanks so much for taking a video! It helps me out a lot.
Traps can be wound up in your hand by holding 'E' and thrown by left-clicking, which will immobilize a monster for a few seconds (or yourself, like what happened at 7:58 in your video haha).
Alarm clocks can be wound with 'Q' and thrown with left-click. All nearby monsters will chase the loud ringing sound instead of you for a few moments, which gives you a chance to run away and hide.