It is shown in this speculative paper that modern biological calorimetry need not to be laboratory bound but may go afield in cases where biological systems are fixed in their place (e.g. plants), have strong interactions with their environment or fall victim of artefacts when they are isolated from their natural connections for longer periods (e.g. insect colonies). On the other hand, often it is interesting to perform broad screening tests directly in situ. This survey presents chip calorimeters developed recently for the latter purpose and very simple camping box instruments for large or locally bound systems. Applications for different biological problems are discussed.