That little piece of filament the printer extrudes before printing, then dangling off the front corner of the build plate has always irritated me a bit. Since there is nothing to grab hold of it or bump into it to knock it loose, I made these hooks to clip in between the display and the y-axis to do that job.
I've had fairly mixed results regarding the time it takes to dislodge that little filament booger (not sure what else to call it), but the results are always the same - it will be knocked/pulled loose eventually.
You can play with different combinations to find the one that works best for you, my setup is as follows:
The hooks will work perfectly fine with the stock Snapmaker enclosure (I use one myself, so I designed it that way), but if you built your own similar to the Snapmaker where the rubber feet protrudes through the bottom of the enclosure, then print only one of the hooks to test the spacing first.
Please note that I designed these for the original Snapmaker - I have no idea whether it will either fit on the Snapmaker 2 A150, or even be functional on it if it does manage to fit. I am however happy to make modifications if someone who bought the A150 is willing to work with me - personally I backed the A350, so I will most probably have to come up with a new design for it.
(...may need some community help to tweak it for the A250 as well)