Any solid, stable wooden furniture that sits on a firm solid foundation itself works optimally to enable the best sound from the system.
Buying nice looking second hand furniture to place components on/in is a good way to save some money that can be invested better in the system itself perhaps if the goal is to produce better sound.
The only other requirements are that there is sufficient room for all your stuff and access for connecting things, and that you like the way it looks.
Also make sure there is room to keep low level devices separate and shielded from inductance fields from nearby transformers like those in power amps and other power equipment nearby and other potential sources of noise, like RF interference that might be present in some digital devices, etc.
Buying nice looking second hand furniture to place components on/in is a good way to save some money that can be invested better in the system itself perhaps if the goal is to produce better sound.
The only other requirements are that there is sufficient room for all your stuff and access for connecting things, and that you like the way it looks.
Also make sure there is room to keep low level devices separate and shielded from inductance fields from nearby transformers like those in power amps and other power equipment nearby and other potential sources of noise, like RF interference that might be present in some digital devices, etc.