The ‘Knock Knock’ back massager is an interesting and creative design from Lim Ruiwen. Designed to look like a bent hammer, this baby is perfect for massaging those hard-to-reach places on your back.

Plus, this ‘Knock Knock’ back massager will intrigue, or even frighten, your friends when they see you whip out a hammer and start pounding your back with it. Although the massager must do a great job, it is undoubtedly the visual of said piece that will be the most captivating.