This was a pretty cool idea,
though it could have been executed better.
As far as ideas go,
Since this is a manip,
I would have added some more stock elements in there,
something crazy, like..some opaque squares floating around,
showing people walking around, something that mimics a hologram game screen almost.
Some "effect" Suggestions, would be to make some small sparks where it's being plugged in, and also to contour the outlet to the earth so it's curved. Also, remove that C4D on the right, it kinda clutters everything. and makes it look confusing.