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[toggpine]

Izzy - If you know the measurements, most lumber stores will cut your materials to size for you. In some cases, there may be a charge, but you can find that out up front just by asking.
Then all you have to do is use a level, a hammer and drill to get it assembled & mounted on the wall!

From the looks of things, the bobbin holders are just finishing nails (ones with no heads) inserted into narrow boards in a frame. You would just need to know the max height of your spools for the spacing between the boards in the frame and give them a bit of extra head space to get them in & out.