Here is one "Ikea hack" that I found particularly interesting because of its connection to Japanese footwear.
|From Ikea Hacker Yeow Benny|
They're wooden geta fashioned from Ikea chopping boards! I'm not sure how functional they are, but I think they're cute. I wouldn't have looked at a chopping board and thought, "Wow, this would make a great pair of shoes!" That's why we're lucky to have Ikea Hackers like Yeow Benny in this world.