Jews, and many non-Jewish spouses, friends and family members, will be observing Shabbat on Friday at sunset this week. And if we had a drone that could fly over hundreds of Jewish homes taking photos of their gatherings, we would not see two of them that matched-up perfectly.
Setting aside the Sabbath Day is something each person/famiy group does in a unique way. There would be commonalities, of course, such as candle lighting and loaves of challah. But even those familiar customs are not obligatory.
The primary obligation in Torah is to set aside the seventh day of the week to honor and observe God's handiwork of Creation. It's to honor God as the Creator. We are His Creation, and we are the recipients of all Creation has to offer.
After each crazy week of activity, the idea of Shabbat is to stop, just stop and remember we are not in charge here on this planet. God is in charge of us and of everything else. Surely, one day a week is not enough for such an important idea!