since in the movies will be hard to explain the infinity gems, i think this theory could be real
the tesseract aka cosmic cube have the powers to open portals, maybe he have a space gem inside
loki weapon have a blue thing that could be the mind gem, since he with one touch can control minds with it
the aether on thor 2 can be the power gem
soul, reality, time , i could not detect yet but they will be present on the next movies
what do you guys think about it?