As if there were not enough creative spool holders out there... here's another one :)
This will fit spools up to 190mm diameter.
The width is adjustable.
It's one of those meta-prints that one has to give a try at some point and I felt inspired by the brilliant ball-bearing and the sidemounted spoolholder found here: http://www.thingiverse.com/thing:56298 and here: http://www.thingiverse.com/thing:312624
It all prints without support and it should be very easy to assemble.
Check "Instructions" for parts list.