One note guys, i was going to use the blu ray menu for checking measurements of the tape deck, but i realized that was done is post and the production people will make stuff fit thr tv screen ratio and not care about being accurate, the same holds true for the sound track cover image, i found the buttons were stretched down for fit the art. There is however about two to three shots in the movie and i think one of them is straight on. I haven't pulled screen caps yet.
Soulinertia, i agree about the two different sized trolls but if you watch the movie, you will notice that the trolls hair is actually longer than the trapping orb, when Yondu opens it the hair pops past the covers, i also wondered if there was some digital help there. There is some scene where you see the troll in the bag and one scene where it is floating around in space.
also i have yet to see anyone building a trapping orb or what the size is, but i wanted to build one also.