General rule is blankets at 1 and pillows at 2, but nothing added to a crib regardless of age.
My pediatrician told us no blankets or pillows until 2 year old. I’m in the US though!!
My 16 month old has had a pillow & duvet in his cot for the last 2 months. My oldest is 5 years old & had a pillow & duvet since 14 months old too
My baby uses a pillow and blanket and has used it for a bit he can move it on and off himself and he throws them out when he doesn’t wanna use them he’s 13 months old I’m also in the US I never heard the no pillow or blanket until 2 though personally I only got told this when he was basically immobile and it could cause suffocation and also the “pillow” he uses is a squish mellow it has a circular form super soft and not huge it’s literally the size of his tiny head
I just got my son a toddler pillow at 2 and he never uses it/doesn't seem interested. Same with blankets 🤷
After one.