how about a desktop cpu tower cooler? even though laptop cpus are low power, passive cooling is pretty difficult.
another alternative for mounting would be to 3D print a bracket but that would require a printer, basic cad skills and a heat resistant filament like polycarbonate.
look at how much metal there is on these fanless mini pcs which use low power laptop cpus
Ok isn’t there still TLS encryption on top? Even if the Swiss Government were to tap ISP routers they won’t see much.