Saline spray and snot sucker. Also when they get stuffy turning on a humidifier can help. My aunt says that the humidifier every time her baby got the sniffles is the only reason her third child didn't have to get tubes in his ears like the other two did.
i put vicks on my daughters feet and put socks over them and it seems to help her.
Saline spray and a humidifier
Baby Frida saline spray and nose sucker has been amazing for us