Marvel's Avengers Tesseract Chitauri Portal Device

Here, I've recreated the device. While some of the parts may not match up entirely, such as shape or color, they work as a fine substitute or place holder.
The top black piece (which was more of a gold or copper color in the film) is loose so it can be spun, as seen the film.

The set is designed so that underneath where the Tesseract goes a hole lines up. This leaves potential for it being a light brick set. There is room underneath for a such a piece to fit

No blue or white light brick exists, so a blue LED was used in these images. This set would not feature any new molded pieces, but to accomplish this effect a new type of light brick would need to be made.

To keep with the story of Avengers, Black Widow, Dr.Selvig and a couple of Loki's foot soldiers could be included. This would allow people to recreate the scene they know. Where Black Widow rides up on one of the Chitauri Chariots and gets help from Dr.Selvig in closing the portal.