Creative Sensing of Natural Targets -- The Development of Artificial Receptors for Small Peptides Using Combinatorial Approaches -- Calix[n]arenes as Protein Sensors -- Polypeptide Conjugate Binders for Protein Recognition -- Saccharide-Selective Boronic Acid Based Photoinduced Electron Transfer (PET) Fluorescent Sensors -- Creative Detection Techniques -- Biomolecular Sensing with Colorimetric Vesicles -- Combining Molecular Recognition, Optical Detection, and Chemometric Analysis -- Analyte Sensing Across Membranes with Artificial Pores -- Identification of Catalysts in Combinatorial Libraries -- Dynamic Combinatorial Libraries for the Development of Synthetic Receptors and Sensors.