Growing up, "Sister, Sister," "The Parent Trap," and "It Takes Two" made having a twin appear cool.
You'll always have someone to play with, and as you become older, you'll continue to do everything together.
I imagine you'll want your own place and identity at times. Even as twins, it may be wise not to reveal everything.
@hakunamatatahome gave his twin kids their own chambers with a secret way to connect them.
He drew the simple door design, carved it out,
and added a charming wooden door on the wall separating their rooms.