Here are some bed clamps for the glass on the old flashforge creator pro.
These are much better than the binder clips because it allows you to print over the entire bed without worrying about crashing into ANYTHING!
The fit overtop the existing nuts holding the heated plate. All that needs doing is adding an extra m3 nut AND washer (important) on the underside.
Flashforge creator pro (old)
Print in ABS with no supports.