Thank you all,
Sorry, I must have mislead you.
I did all the messy work at home, though never had time to finish the cubohedron or the Edges only cube. I only took sticky vinyl, scissors, knife, sandpare etc. to finish them off + make the Silver edition of the path cube from scratch. Though that did not require much effort...
I did use black sheet plastic for edges only cube Sandy. It was fun to make.
Dodd, the edges only cube is litterally all it is. Though you must leave a bit of corner pieces there for the cube to work. You either file the corners down or like in my case: I cut the inner bits off and inserted the corners from the key-chain cube instead, if that makes sence.
Now hopefully I will manage to finish the 3x3x3 flat octahedron I started...