Owing to their unique anisotropic structure and their extraordinary properties, carbon nanotubes (CNTs) have spurred great interest in a wide range of application, and more particularly in materials science where the CNT hybridizations with other materials offer significant advantages. CNTs grown on alumina micro-beads and silicon carbide micro-platelets are among the most promising multi-scale combinations due to their outstanding thermal, electrical and mechanical properties. By simply adjusting the synthesis parameters, one can significantly affect the final structure and thus the properties of the hybrids, opening up a large area to explore.