Things from HOM: The cubes aesthetic, the idea of Wanda creating this "fake" supposedly ideal reality and being devastated when she loses it.

Vision and the Scarlet Witch: Wanda and Vision getting married and trying to fit in as a traditional family in the suburbs, halloween episode, Wanda getting pregnant and having the twins.

Vision solo: The aesthetics, Wanda and the kids possibly taking "Vision" as a surname, Sparky.

And my guess: A mystical origin for Wanda connecting her to magic/witchcraft inspired by Nights of Wundagore and/or the Scarlet Witch solo.