Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1176033.

Because of the limited space inside the printer I mirrored the holder from bbeaudoin and placed both of them outside of the device. Now together with some additional adapters and the Lid Spacer from PeterS1 http://www.thingiverse.com/thing:1219953 nearly every kind of spool can be used for the Dreamer.

Update 2016/08/04: Adapter for Multimode-Spools with an inner hole with 50mm diameter and 87mm depth added