Possibilty to add wireless to none wireless router?

[Ricochet J]

Its just got me thinking. Suppose someone had a router but its not wireless and they wanted to add wireless nodes, like say a Laptop and a NAS, how would they go about doing it?
If there is such a way isn't it better as you choose how your wireless is going to be as apposed to bundling it in the actual router package.

Thanks

 

[Ricochet J]

Ahh I didn't think of that, how stupid of me, and i'm doing a Cisco CCNA course
Bob is my uncle indeed