I made a cheap decision of buying only one full spool of Bambulab PLA and the rest refills. And now I am stuck to one color unless I finish my current spool. I found the printable stl files from the Bambulab Wiki (great job Bambulab) but it is too large to fit on my Prusa Mini buildplate. So I modfied the filament holder a bit, and now I can get them printed.
The holder fits the entire build plate and no skirt should be used.
Since the size of this filament holder is only a few mm later than the normal refill PLA, I recommend to print the first 100g on a large filament holder (the one that comes with the filament), and transfer the rest of the material to this mini version so it can sit nicely on the PrusaMini filament holder. If you are using a central-hole style holder, this should be well enough.
The author remixed this model.
I found the printable stl files from the Bambulab Wiki (great job Bambulab) but it is too large to fit on my Prusa Mini buildplate. So I modfied the filament holder a bit, and now I can get them printed.
Major changes: