Most babies will turn head down by 34 weeks, and...even more so by 36 weeks. A few ideas:
You could try a slant position. Lie on floor with legs on a chair and pillows under your hips. You can do this a few times a day for about 15-20 minutes. (maybe while you watch television). A variation is resting on your forearms and knees with bum in the air.
You can also check about seeing a chiropractor trained in the Webster Technique...designed to allow for baby to turn, although this is not a manipulation to baby at all.
"Baby Thunder"...sounds odd, but if it works it beats a c-section.... Baby can hear fairly well. If you have a shower nozzle that you can take down, hold it towards baby's head, the idea being they may move away from it. In the same token....play music very low on your pelvis, the thought being that baby may move down towards it.
Some people may consider an external version, where your midwife will manually try to turn baby on the outside. Works for some, not for others. Success has to do partly on baby's position, location of the placenta, and how much experience your midwife has doing them.