To have smart home system is achievable even if you have a budget. For a start, consider to get a smart speaker such as Google Nest Mini or Amazon Echo Dot to act as a central hub for an interconnected home ecosystem. This hub provides a wide array of smart devices such as smart plug, lighting and more. One of the features is the voice command control.
Smart lighting with integration of smart speaker offers voice-controlled features, enabling to control the ambiance. Voice command control provides convenience and energy efficiency including smart switches as well as the bulbs in the rooms. Smart plug is another affordable investment to use voice commands to control it and schedule the routines based on the use case.
Apart from these mentioned smart devices, there are rooms for further expansions such as smart security systems.