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!