Where to get the two skins?

Borderlands: The Pre-Sequel BL: TPS Loot and Weapons Chat
#1

I found the two from BL:WIKI but that web doesnot provide no word about the source. Some guy knows more story about them?

pictures from BL:WIKI
The_Spirit_of_MalicePiece-a-Easter_Nisha

#2
  • If memory serves me correct, the first Christmas one just showed up when you downloaded the Aurelia DLC. Along with the unicorn one, manufacturer one, and the first Halloween one.

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