The Collector's Edition

I just had a glance through my videogaming collection and I noticed that I have more than a few Special Editions/Collector's Edition sets of more than a few games. I was wondering a) what you deem as buy worthy in terms of Collector's Editions of games and b) which games that you have bought the Collector's Edition for. Do you even buy collector's edition's of games? What's your opinion of them?

Personally? I find little knickknacks like vinyls, figures/statues, art books and replicas. What's your poison? Plushes? Cards? Early Access? Which Collector's editions do you regret purchasing?

Currently I have:

Ar Nosurge
Fallout Antholagy
Fallout: New Vegas
Fallout 4
Dead or Alive 5
Dead Space 2
Deus Ex Machina: Human Revolution
Ragnarok Odyssey Ace
Senran Kagura Shinovi Versus
Senran Kagura Estival Versus

What I regret? Only the Last of Us Special Edition. I don't know what I was thinking on that one. The game was... less than stellar and barely above sub par.

I love collectors editions with some sort of physical collectable (Statue, bobble head, hat, etc.) and I have quite a few. I also like to get things like art books and "lore materials" as well as that exclusive content when possible. Funny enough I'm also trying to sell a couple on eBay right now.

I have:
Halo 3: ODST (though the controller was crushed a few years ago)
Halo Reach
Halo 5 (Selling statue)
Deus Ex: Human Revolution
Mass Effect 3
Skyrim (sold statue)
SWTOR
Fallout 4 (selling pipboy)
and am waiting for the collectors items to arrive for Titanfall 2 (You can buy just the items and get a digital copy of the game which is nice since amazon is delayed as F*** with Titanfall 2 CE stuff)

I really regret Fallout 4 and Halo 5 CEs as they ended up being disappointing games and disappointing CEs... Plus the extra cash will be nice!