The development of automatic analyzers based on flow techniques, like FIA, MSFIA, SIA, MPFS, etc., involves the use and continuous innovation of fluidic devices. The new trends go toward the miniaturization of sophisticated fluidic platforms, like chips, requiring continuous advances in this field. The availability of a mechanic and electronic workshop together with the know-how to build new 3D fluidic devices provides the tools for the creation of innovative instrumentation and stimulates the creativity of analytical chemists. In this contribution, we will present how to build and use new flow-based fluidic devices, together with the tools required, such as computerized controlled lathes, milling machines, laser engraver machines, low-temperature co-fired ceramics technology, and 3D printers, highlighting their strong and weak points. In addition, some flow-based methods exploiting innovative fluidic platforms applied in catalytic spectrophotometric methods are presented as a way of examples of the possible devices that these tools can provide and their potential applications.