The "them" in the verse is God's commandments, or more generally, his word.
Breakfast is one of the times we sit in our house together, so it is a prime time to implement this aspect of Deut. 6:7. One of the ways I do this at breakfast is by quoting Numbers 6:24-26.
24 The LORD bless you, and keep you;My chosen method of doing this is to place my hands upon my sons' heads and then recite the verses. As I say "May the Lord lift up his countenance upon you," I lift my hands off their heads and then bring them back down on the "give you peace."
25 The LORD make His face shine on you, And be gracious to you;
26 The LORD lift up His countenance on you, And give you peace.'
My boys have taken to grabbing my hands and seeing if they can keep me from lifting them up. At first I just lifted the boys off their seats as they held fast onto my hands. Can't do that anymore!