Filament Spool Closet Hanger

Hanger allows you to hang your filament spools on the rod in your closet.

Triskite also make a derivative that has a couple other sizes for those who bought filament from someone other than Makerbot.

http://www.thingiverse.com/thing:50272

Triskite has now made a derivative with dual hooks to prevent sagging at the neck of the hanger:
http://www.thingiverse.com/thing:75720