If your house’s interior design can’t wait for portal technology to exist to make that big impact on your guests you could just go and make some fake portals in the meantime. That’s what Redditor Corttana and her husband did and it worked great!
If you look at it you could probably find a hundred different ways to do it yourself. The main ingredients are just mirrors, wood, and rope lights. All you have to do is put them together.
Just remember do not try to go through them! You might not be able to play Portal 2 if you do and that would be a shame.