Granny square cube

I recently came across this book at the library: "Hæklede firkanter" from Bente Lavsen, where I found this idea of maknig a cube out of  crocheted granny squares

So I first tried to do a cube and stuffed it with the usual white stuffing I use for amigurumi, but it didn't look too good, although it doesn't really show on the picture.

Then I filled another cube with a fabric cube

Here is the final version