Hello
@myrre there are many things you can buy to make your home smart. Dont know exactly what it is you are looking for, but if you think about lamps and such, it is possible to control with the mobile phone, usually those who sell lamps and such have their own app, but also some lamps support Google home and also SmartThings. but without knowing exactly what it is you want to be smart in your home, it is difficult to give any direct advice.