If it's relatively minor apnea, the oral appliances do work. My wife has told me that my snoring has completely stopped when I wear it, and the snoring comes back if I forget. In combination with a fair amount of weight loss (about ~55lbs over the course of a year), I feel a lot better.

I use the walmart-brand breath-right nasal strips every night as well. I don't know if they actually do anything for me, but they're also inexpensive and they're not uncomfortable, so I figure it's an extremely cheap and harmless placebo if nothing else, and they certainly feel like they're doing something.