I use this thing (well, I did when my laptop worked. Still shopping for a replacement). Travels well, doesn’t block anything. Does depend on the front lip of your laptop being.. something. The nubs might stick up too high for some laptops.

ETA the link because I’m a dummy https://www.amazon.com/MacBook-Stand-Portable-Laptop-Riser/dp/B00VIZ60QY/ref=sr_1_3

hmm might get this instead then https://www.amazon.com/gp/product/B00VIZ60QY/ref=ox_sc_act_title_3?smid=A3LJHJFVR61S53&psc=1