RUseeN Portable Blackout Shades (118" x 57") Travel Window Blackout Curtains, 100% Blackout Material Temporary Blackout Blinds for Baby Nursery, Bedroom, Caravan, Office or Travel Use

This the cheapest solution I found that blocks out all light and doesn't look bad. They claim to be portable black out shades but they work better then than any black out curtain. https://a.co/d/0g5bpdFW