Buy your own groceries once and the cereal your parents kept stocked starts looking like a small miracle.

Costs stay abstract until they come out of your own account. A cupboard that was always stocked looked like a feature of the building rather than a weekly decision somebody made, budgeted for and carried home. The first time you do a full shop yourself, feeding one person turns from a number into an experience, and everything you took for granted acquires a figure.

Do the shop, then say something about it. A short message to whoever used to do it, naming the specific thing you noticed. Concrete thanks lands much harder than the general kind.