Modular Wall-Mountable Cup Holder

Here are the changes based on the original model:Add back panel and holes to the out layer to make the shelf wall-mountedMake it larger to fix the starbucks cupAdd modular connections to connect multiple shelves This modular, wall-mountable cup holder system is designed for ultimate flexibility and style. With its easy-to-assemble structure, you can freely combine or rearrange modules to suit your storage needs and aesthetic preferences. Sturdy & ExpandableThe outer shell features mortise-and-tenon joints that enhance stability while allowing seamless future expansion to create more storage space. Two-Piece Design for Easy CustomizationThe separate inner and outer shell structure offers greater freedom in color matching—change the look anytime to fit your mood or home décor. Once mounted on the wall, this design makes it easy to swap the inner shell without damaging the wall. A groove at the inner-outer interface is also available for inserting magnets(12*3mm), ensuring a secure fit. T