In symbolism, we can embrace the power of "and"...
That Stark Toaster commercial...
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A thing with a 
face, made by Stark Industries, with a major item on its forehead.  In the comics, Vision is occasionally referred to as a toaster.  So, that thing on the forehead is the Mind Stone.
The Hydra Soak luxury bath powder comes in... a completely cubic, light blue box
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That's not a natural shape for a box of bath soap.  Looks a lot like the Tesseract, doesn't it?  While I can see an argument that the toaster is stretching it, I don't think there's a strong argument that Hydra and a blue cube isn't Tesseract.  Really.
And the Strucker ad...
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What says "TIME" more than a watch?
And, the Lagos paper towels...
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Have we forgotten that the Aether from Thor: the Dark World was a red fluid?
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Sure, all these things are references to Wanda's past.  But 
ALSO...