If there is a new home sales tract near your home, go visit. It doesn’t matter what size the homes are. What you will find are some wonderfully (but sparsely) furnished homes that anyone could live in with an emphasis on “anyone”. They are anonymous. There may be a baseball glove in the boy’s room, but no family photos on the walls.
There may be “personality” but no person.
The reason you want to make your home “anonymous” is because you want buyers to view it as THEIR potential home. When a potential homebuyer sees your family photos hanging on the wall, it puts your own brand on the home and momentarily shatters their illusions about living in the house themselves.
Put away family photos, sports trophies, collectible items, knick-knacks, and souvenirs. Put them in a box and then into a rented storage unit for a few months. Putting these items into the attic or basement is counterproductive. The idea of selling a home is to remove clutter as much as possible preparing for the sale.