Transnational mobility has become a ubiquitous phenomenon. Yet, it is inherently transient and unstable. How, then, can we analyse it ethnographically? This special issue presents several methodological experiments exploring the interfaces between individuals' migratory experiences, which are always context-specific and can never be fixed, and institutional, structural and historical forces constantly changing. The articles explore multi-scalar, tandem, multi-media, centripetal, and lateral ethnographies as new modes of field research, writing, and analysis.