Simple glass plate holder

Almost all the holders I see here don't press the glass plate against the base but press the glass side against a flat surface or the end of a screw causing the glass plate to lift ! At least a slanted surface should be used !
Good luck for bed levelling and issues due to thermal expansion with heated bed.

The paper clips are a good solution but interfere, are bulky and don't look professional.
I did these in a few minutes using 1mm spring steel wire. Can be a tad bigger. Just to give an