I am the third child.
My oldest brother did not own markers at age 20 months.
When the middle brother was 20 months old, he drew with the oldest brother’s markers while Mommy held him in her lap and supervised.
Then I came along. And I get free access to the markers! Well, actually, Mommy drew the line (get it, drew? ha ha) at me sitting at the table because I was drawing on the table. Mommy said something about not being able to help the brothers with their project while also constantly rescuing markers out of my grubby little hands.
It is fun to be the third child…