Earl is hunkered down in the cargo bay of Sanctuary.
I ended up getting this after being the game on the first playthrough, being as new items are unlocked as you play through the game and
I do not recommend trying your luck on Moxxxi's slot machines as they seem especially unforgiving in this sequel. And try your best not to spend them
Room Decorations are indisputably the cheapest cosmetic items in the game. You can find a grip of them for anywhere between 25-45 each, with one basically being a freebie (1). So, you'll need 500-800 Eridian to unlock this puppy.