Growing up we lit candles and said Advent prayers at dinner time. I think once or twice my mom mentioned giving up something for Advent, but I remember objecting saying, "Who started that Advent tradition?" lol I was probably thinking about Christmas cookies. Anyway, no one I knew did anything except Advent candles. No mention of Jesse tree, O Antiphons, or sacrifice beads, and giving something up. It just wasn't part of the culture here. If they did they sure didn't talk about it.
O Antiphon time.. start teaching your kids Veni Veni Emmanuel. Or O Come, O Come Emmanuel. This is your O Antiphon song. If you start learning it now, you will have it ready in time for Advent. Try the Latin...what can it hurt? ;) That is the link to a youtube video we play to learn. Hope it helps!