The study of capsules and their functions is still in a period of maturation. Multiple spectacular examples in the literature have shown what can be achieved within the confined environments of capsule cavities. Building on these, and inspired by nature's use of confinement effects to achieve astounding recognition and reaction selectivity, combined with advances in molecular design, we anticipate that increasingly sophisticated structures and behaviours of capsule systems will emerge over the coming years. Based on current trends, we are sure that (supra-)molecular capsules will become invaluable tools in the development of advanced catalysts, sensors and artificial systems/networks.