Great Printer Hook(spooler)

thingiverse

You might also consider the Glankonian Protoforms Hook for easy loading and unloading of various spool types on your Prusa. Although it was initially designed for EcksBot, this conversion is possible. Just remember to use a filament guide to prevent binding issues with EckerTech spools when the head moves beneath the spool. Clip it onto the top bars of your Prusa, load up some plastic, and revel in the convenience!