This semester project is a proof of concept for the production of Lego R -like bricks in MEMS. Several design iterations have been made using milimeter-scale, o-chip fabrication methods. The nal product consists of 3mmx6mmx2mm bricks made of PDMS enriched with magnetic powder. The bricks interact mag- netically and can be used to make simple, deconstructable structures. Among the parameters to vary and be explored during the design iterations were shape, fabrication methods, density of magnetic powder and magnetization direction.