Started printing gridfinity and all things around my stuff, couldn't find a model for my breadboard (Indian/Chinese variant). So thought will design it myself. This is my first 3D design. So feel free to modify if it doesn't fit according to your needs. The breadboard fits in snugly and doesn't require any glue or tape. If you want to remove, the breadboard in case,  just rotate it upside down and give it a tap, it will drop under it's own weight.