$30
72" tall by 104" wide blackout curtains + the curtain rod
Amazon:
https://www.amazon.com/gp/product/B0792MXSQT/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B07D7XTS27/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Can pickup at Stanford or in SF
Please do not message this poster about other commercial services.