How to make a thank you page effective and engaging? Don't be boring

For visualization we have picked up 5 examples of good thank you pages 

These are by the way dinosaurs in Supplement, more precisely in super food . They have competent funnels. In Thank you Page they use CTA "Back to Shop", such a back button for the modest. 

Cool solution for collecting feedback. I should try it out for myself. 

Nothing special. Just an example of how almost everyone does it. Interesting page design though  

Nice page that includes brand promotion and a "Shop Now" button that doles out sales to these guys.

Send a leadmagnet with a video after conversion. In the video, they offer their offers. It's better than just writing "thanks for buying". You have to push in every way possible