Some people make the sign of the cross whenever they drive past a Catholic Church (showing respect to the Real Presence therein).
And doffing your hat if you’re a man.
Also some people pray for the holy souls in purgatory when they pass a cemetary, and spit when they pass a Masonic temple.
Knowing the patron saints of causes you need assistance with and asking their intercession is another big Catholic tradition.
Joining the Knights of Columbus (if you’re a man) or the Catholic Daughters (if you’re a woman) is another common practice in American Catholic life.
Celebratings saints feast days that are important to you with a party–oh, and don’t forgot Mardi Gras!
Making penances for Lent, of course.
Bowing your head when Our Lord’s given name is mentioned.
Praying for the departed during the month of November and having Masses said for their souls.
Obtaining indulgences, especially at certain times of the year.
Saying novenas, especially at certain times of the year.
Inviting your parish priest to dinner once or twice a year.
Going to First Friday Masses and First Saturday Devotions.
Making pilgrimages to holy places.
Praying for the holy father.
Praying for priests, especially on Ember Days.
Devotion to the Sacred Heart.
May crownings.
Corpus Christi processions.
The 40 hours devotion.
That’s all I’ve got time to post now but you’ve entered a whole new world, I can tell you.