Aside from smart devices, Homey also supports several 'dumb' devices. Learn how to connect them in this article.
Wired devices
Wired devices need a wireless control method. There are workarounds for devices that don't have built-in wireless controls, such as your trusted coffee machine or regular lights. For instance, you can add a relatively cheap socket switch to these devices and include them in your Homey ecosystem. This way, you don't have to buy a completely new device.