Some sources that might be helpful to you.
I would recomend things that represent sleep that you think he might like. Find what kind of wine or meat he likes for libation and food. With drinks I usually pour out on plants. For food I would burn if ouranic and bury if chatholic. Don't forget to cleanse before prayer. Meaning bathe to make sure you are clean physically. Wash hands and face. Burn bay leaf and so forth. Miasma is not something you can rid yourself of, but it is something you can manage. Also, find out what kind of incense he likes for prayer. For ouranic it is thought to send the prayers up to olympus.
I hope this helps you. ^^