Since you've had babies before you'll know your body but PLEASE PLEASE PLEASE listen to yourself and if things feel weird/off/wrong GO TO THE HOSPITAL.
I think a homebirth would be very special and wonderful but just be careful. OK-mini-paranoid Reyna lecture over
The 9 Waves Blessing is easy and could be done in a hospital as well. You could also get some battery-operated candles (tea lights for pumpkins come to mind), they aren't really candles but they do flicker and can kinda re-create the same candle-feeling. You could also use a spritz-perfume to recreate the incense....I know those things aren't exactly the same but its a way you could alllllmost have the same ritual, while staying within a hospital's rules and regs.
Something I did (once we were home, I meant to do it at the hospital but just never had the energy) was I held my newborn in the moonlight and said a prayer for peace and strength and good health, then I held her out and introduced her to the gods and goddesses. It was pretty cool, she laid there with this bright, inquisitive look on her face and when I introduced her a very gentle spring breeze came by and made her smile. My original plan was, once we had decided on a name, to whisper it to her first, then the prayer, then introduction-so she would be the first one to know her name--but hubby got a little excited and posted on Facebook. I think she was the last one to find out-sighhhhh.
I'm sure there are other things you can do-will do some digging, I love baby rituals.