Are you in the US? If you go to Target, you can find plastic links for babies. They come in a zippered pack (I think of 24?) for $4. They are bird safe, I've read. They are also textured...that's the best part about them, my bird loves them because of that!
In your picture, it looks like the toys are hung by those exact links. I hang toys from perches with those links myself in Emmi's cage and not only does she love playing with the toys, but she loves moving the toys back and forth along the perch.
As far as the eye hooks in PVC, they drill the PVC and then bolt or screw in the eye hooks. Maybe ask your local hardwear store if they are able to dril you some holes for a small fee?
Post pictures when you're done!

My family: "Emmi" Green Cheek Conure (12/15/2012), One husband, two step kids, and one baby boy born in January 2015!