1- VR headset (Quest, etc.) 2- Two folders. This is an old one that used to be used when taking exams IIRC. Open them up at 90 degrees and stand them on thei

1- VR headset (Quest, etc.) 2- Two folders. This is an old one that used to be used when taking exams IIRC. Open them up at 90 degrees and stand them on their side. This forms a three-sided "box" with an open top, a back wall, and a wall on either side of your notebook/paper/tablet. Put your work pretty flat on the table. This is like a little portable cubicle. Your work gets privacy unless someone is literally hovering right where your head is, in which case you dismiss them because that is rude. 3- There are literal "laptop tent/hood" products of various designs that are made to keep the machine/screen out of the sun, so you can work outside. But this sounds like the best fit for your use case too, IMO. In the past I've seen sleek black designs, though some look like a tent for the beach or camping based on a quick search now. But yeah standard answer is 3M privacy shield with very limited range of vision and dim your screen.