We have presented a versatile method to attach various pre-synthesised functional nanoparticles onto microparticle supports "off-the-shelf". The flexibility of our strategy is inherent in the ability to encode chemical complexity into a polymer bridge, which allows the appropriate selection of functional groups to bind different metal and metal-oxide nanoparticles to target a desired application. In short, using the "Swiss-army-knife" pPFPAC polymer bridge enables a "pick'n'mix" approach to support nanoparticles onto various substrates, addressing some of the limitations currently facing the application of nanoparticles to e.g. photocatalysis. Attaching plasmonic materials, e.g. Au nanoparticles, onto SiO 2 microparticles, could also find uses in imaging and sensing applications due to their favourable optical properties. 71 Furthermore, the simplicity and gentle synthetic conditions of this strategy allows its application to Pickering wax emulsions, in turn enabling the modular synthesis of large quantities of multi-functional microswimmers via Toposelective Nanoparticle Attachment. Therefore, we hope our method will help bridge the fields of catalysis, nanochemistry, and active matter, and thereby facilitate an interdisciplinary approach to the synthesis of designer microswimmers and thus bring the promise of "chemistry-on-the-fly" 44 one step closer to realisation.