Customizable Filament Spool
This thing can be customized with MakerBot Customizer!
Open in Customizer
Description
Parametric Spool for your filament leftovers.
Adjustable by Spool Width, Spool Hole and Outer Diameter.
Need a customizable Spool Holder for the Replicator 2 ? Go check out thingiverse.com/thing:44906
Adjustable by Spool Width, Spool Hole and Outer Diameter.
Need a customizable Spool Holder for the Replicator 2 ? Go check out thingiverse.com/thing:44906
Instructions
15% infill, 3 shells, 0.27 layer height.
License
Customizable Filament Spool by woale is licensed under the Attribution - Share Alike - Creative Commons license.

Nice design - easy to print, looks very solid.
One request - can you add a clip or hole for holding the "loose" end of the filament to the spool? It doesn't have to be anything fancy, just a few holes in the rim, or perhaps slots to pull the filament into.