This is how I got one after my first birth:
I gave birth in a freestanding birthing center, but my baby had to be transferred to the nearby NICU.
I can't quite remember now, but either I lost my peri bottle they gave me or I didn't get one in all the confusion and stress of the transfer.
Anyway, I just walked over to the maternity ward, went to the desk and said I had a baby transferred into the NICU and did they have any spare peri bottles. The nurse just handed me a pack w/ a peri bottle and a bottle of Betadine, no questions asked. Bless them.
So, maybe you could just walk into a hospital and ask.