created a snap insert for suction mount for multiboard.
i used the following suction: 5/10 Stuks Zuignap Haken Met Schroef Moer 25/32/41/53Mm Clear Sucker Pads Sterke Zelfklevende Zuighouder Voor Glazen Badkamerdeur - AliExpress for this.
ideal for i you don't want to drill holes or srew it.