Toyota still sells them. They’re used on lots of different models. $1.50 ea
https://www.toyotapartsdeal.com/oem/toyota~retainer~sub~assy~quarter~ventilation~louver~62909-22010.html?vin=&make=Toyota&model=Land%20Cruiser&year=1986&submodel=U.S.%20Destination-Wagon&extra1=&extra2=&filter=()