Functional ceramics provide various highly interesting properties like piezoelectricity, thermoelectricity or electrical conductivity for applications in the fields of energy conversion, microelectronics and sensor systems. Conventional production processes for the synthesis and shaping of such materials unfortunately are often connected with a high energy consumption and the need for elaborated equipment. In contrast, nature shows the ability to form inorganic materials at ambient synthesis conditions, which is referred to as biomineralization. The materials formed by this mechanism are nearly unlimited in size, shape, and properties. Various organic molecules, e.g. proteins function as templates in the materials formation process. Viruses like the filamentous M13 phage are a particularly interesting group of bio-templates for the thereof deduced bio-inspired mineralization of non-biogenic inorganic materials. By genetical modification of the phage-genome, it is possible to generate specific surface functionalities for the interaction with a huge variety of technical materials, like zinc oxide (ZnO), tin oxide (SnO) or gold (Au). Due to their length of ~ 1 µm and a diameter of ~ 6-7 nm they can template nanowires, (multi-)layers or filamentous structures. The use of M13 phages as structural and functional (e.g. flexibility, piezoelectricity and surface chemistry) template in mechanically stable, piezoelectric thin films and electrodes for battery applications will be presented to demonstrate the great potential of M13 phages in the formation of functional, nanostructured hybrid materials.