Every household has a step that exists nowhere in any text and cannot be dropped. A grandmother added it once, for a reason that is now lost, and it became load-bearing.
The extra wick
One family we spoke to in Pune lights a second wick on the Diwali lamp, always. Nobody remembers why. The eldest daughter now does it in Berlin, in a flat with a smoke alarm she disables for the evening.
The bowl that isn't used
In another home, a steel bowl is placed on the thali and left empty. It once held a specific prasad that the family stopped making in the 1980s. The bowl stayed.
Why this matters to us
We build kits with room in them — space in the box, blanks on the guide — because the parts you add are the parts that make it yours. A kit that leaves no room for your grandmother's step is a kit that has misunderstood the assignment.