It might be a little hard to see, but this is a design for an improved post-it note. The paper is made from wood waste and the end of the note ends in a triangle to prevent the corners from fraying.
I've used many a post-it in my time and those damn bottom corners always seem to curl up. It's unavoidable! This new take on the classic sticky note, called the IE-Tags, from Shibuya-based Naruse-Inokama Architects, hopes to fix that problem by removing the corners from the equation. They look like little houses but I think it could work. [Core77]