3D Model Display Combination Stand Shelf Table no supports printing - 10cm high, 7.5cm wide per layer

I have printed many 3D models, and the wall shelves are already full. So I designed a set of small modular stands to place more small items. Including the ground, a total of 3 layers of models can be placed. Each layer is 10cm high and 7.5cm wide, which can accommodate most models for display. If the tabletop is also printed, it would be too soft and easily bend, so it is recommended to custom order 4mm thick acrylic sheets. The length can be customized freely, mainly depending on how wide your tabletop is suitable. The tabletop panels I bought on Taobao cost 4 yuan per piece.