A baby monitor is small and cheap to replace individually, but useless if its parts get separated. Keep the camera, parent unit, and both power adapters together and it is a five minute pack.
Pro tip: Screenshot or write down any custom settings, like night vision sensitivity or temperature alerts, before you unplug a smart monitor, since some apps reset defaults after a long offline period.
Watch out: Do not coil cords tightly with sharp bends at the plug; this is the most common point where monitor power cables fray and short out.