Pillows?

My girl sleeps a pillow. She's had it in her bed... maybe 4 to 6 months now.
Honestly, it's just one of my down pillows that she decided was hers.
We didn't have a specific plan. She was sick, and I noticed the pillow gave her the perfect amount of elevation to help with her congestion.
I tried getting her a "toddler pillow," total waste of money. It's small like a travel pillow, and her head slides off almost immediately. My regular size half smushed down one works great.

Around 2, just got one that was a little firm and with a well fitted pillow case

Toddler pillow on Amazon. Much thinner
Started at about 18 months for my guy

We still don’t use one