NO extra part is required! You may turn the original set 21324 – 123 Sesame Street into this photo frame version and put it in an IKEA Sannahed 25×25 cm display frame and hang it on the wall!
The idea of my LEGO® Frame project comes from the situation that displaying an official set at home needs too much space. When a new set comes, the old set has to go. However, instead of putting the old set back to its box, would it be a good idea to reduce it into a photo frame and hang it on the wall? Displaying a photo frame needs minimal space and one can also keep it free from dust!
I hope you enjoy this MOC!