The Portal series has been a huge success and loving fans have shown their own creative appreciation with tributes, like fan made videos or hand-held personality spheres. Now a fully functional Rubik's companion cube can be added to the list of awesome fan-made Portal stuff.
I am utterly amazed at the sheer number of amazing things fans have come up with, it honestly blows my mind. And these aren't obnoxious or lame, they're really freaking cool. Even if the Portal games weren't some of my all-time favorite ever, I could appreciate how they have drawn the creativity out of people, and some of these Portal fans are quite creative.
Image roundup [Super Punch]