What age is it appropriate to give my toddler (14 months) a pillow?

Red Nose has the following information about pillow use in a cot for babies older than 12 months of age.

Older babies in a cot can be at an increased risk of a sleeping accident by using pillows and bumpers as a step to climb up and fall out of the cot. It is safer to wait until the child starts to sleep in a bed before introducing a pillow or other soft bedding.
https://rednose.org.au/article/at-what-age-can-i-introduce-cot-bumpers-and-pillows