Ask Jack: How can I add two external monitors to my laptop?

Simon’s productivity has benefited from adding an external monitor to his Windows laptop. Now he would like to add a second, giving three screens in allI have recently found that adding an external screen to my work laptop has really helped with productivity, but having visited a colleague who had two additional monitors, I now want that too. His laptop had two HDMI outputs so the setup was simple, but mine only has one. What’s the cheapest way for me to do this without changing my laptop? S