Outdoor seating in urban areas, from park benches to café terraces, subtly transforms the microhabitats of city-dwelling crustaceans like woodlice and amphipods. These structures create shaded, moist refuges that mimic natural crevices, offering shelter from predators and extreme weather. However, they also fragment habitats, forcing crustaceans to navigate artificial barriers. Studies show that clustered seating can lead to localized population booms, while sparse arrangements may isolate groups, reducing genetic diversity. Human activity around seating further disturbs feeding patterns, pushing crustaceans toward nocturnal behavior. Surprisingly, some species adapt by exploiting food scraps near seating, altering their diets. This interplay highlights how urban design unintentionally reshapes tiny ecosystems beneath our feet.