The Kefeya S1 laptop screen extender create a dual-monitor setup for your laptop. It's on sale from Amazon for only $110 after a $70 discount.

Prop up the screen and use it for reading PDFs ... And this monitor is plug-and-play, able to connect to your laptop (or smartphone, handheld console, tablet, etc.) via USB-C or Mini HDMI.

Note, however, that not everything reads better on e-ink devices: Despite advances in color e-ink, photos and colored ...