The 10 items that must be left behind does the heir has to meke them himself or could her mother/father have made the 10 items?
It's kind of hidden at the end of the rule...
10. Heirs must leave behind 10 items (no more) of a particular type in the house. No items left can be from previous households. These items must be a) created, b) found, or c) given to you as freebies/perks as part of a career or being a Celebrity. None of the 10 items can be purchased or made on the Display Table. Each house must have a unique item type. Examples of qualifying types — Criminal career objects taken home, Career reward objects (culinary career fridge, law enforcement squad car, Fox statue, etc), celebrity freebies in family inventory, etc.), wedding presents, field trip souvenirs, time travel items, paintings, photos, elixirs, sculptures, beetles, butterflies, turtles, lizards, rodents, birds, snakes, fireflies, gems, metals, spacerocks, fish, relics, inventions, nectar, books, spirits, Gnomes, Lifetime Happiness Reward objects (i.e. teleporter, collection helper), skill certificates, plants, and any harvestables from Omni Plants.
All household members from a given house can contribute towards this requirement.