This is what I plan to get.For inside-car camping maybe these would be good & easy for the windows:
https://melleshop.com/products/car-window-shades?utm_source=pinterest&utm_medium=ads&utm_campaign=car-window-shades-video-1&pp=1
Roadie The OVERNIGHTER SUV Window Tent with Bug Screen and Retractable Awning – Great for Camping in an SUV. (Patented) https://www.amazon.com/dp/B06XX3H5XL/ref=cm_sw_r_cp_api_glt_fabc_RFXB8DN9N8ZXYKCFJQPC
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