I stuck on one of these compact keychain universal remotes with 3M mounting tape. Only problem was in the heat, it wouldn't stay stuck on the plastic overhead, so I instead I stuck it next to the cup-holder. It can program two garage doors. There are also three button versions, that are only a little bit bigger, as well as 3 button standard visor garage door remotes.
https://www.walmart.com/ip/Liftmast...9833&wl11=online&wl12=123725334&wl13=&veh=sem
https://www.amazon.com/Chamberlain-...rd_wg=rTFas&psc=1&refRID=23ARNNBVH4FMNTGQ5MF8
https://www.walmart.com/ip/Liftmast...9833&wl11=online&wl12=123725334&wl13=&veh=sem
https://www.amazon.com/Chamberlain-...rd_wg=rTFas&psc=1&refRID=23ARNNBVH4FMNTGQ5MF8