What to sell to site owner other than SEO?

Hello everyone !

I have a lot of traffic worldwide, special campaign, mostly from website owner (small and medium business) also from some communication company.

I've sold some SEO service and webdesign (remake the website) also a bit of hosting and wordpress theme.

But this is limitated, most already have website, theme, hosting, and a lot of people thinks that the company that created the website do their SEO (wich is bullshit most of the time, they just add few crappy directory. Not…

What to sell to site owner other than SEO?