I can suggest an item that might be found in some people's refrigerators or pantries that could be considered a more modern addition and may not be present in their mom's or older generation's kitchen.
One example could be plant-based milk, such as almond milk, oat milk, or soy milk. These dairy milk alternatives have become increasingly popular in recent years due to the rise in vegan and lactose-intolerant diets, as well as environmental concerns. While traditional dairy milk is a common staple in many households, plant-based milk options may not have been as prevalent in the past.
Of course, individual preferences and cultural practices vary greatly, so this answer may not apply to everyone's situation, but it reflects a modern dietary trend that might differentiate some households today from those in the past.