Thanks, Laura! I have so far tried a Nuk sippy cup, Dr. Browns, Nuby, and a straw cup (not sure which brand it is, but it has Elmo on it which I thought could be enticing haha). I end up taking the spill proof valve out (of the Dr. Browns) because I didn't think he was getting it. And I felt like even if he doesn't put it to his mouth, if he turns it over (which he does quite a bit), at least he'll see water coming out of it and maybe understand.
I have the Tommee Tippee cups actually - they are in a bag unopened, so I can try them. I don't think I posted it in this thread, but one day, I became extremely stressed about getting him to use a sippy cup and I bought way too many of them and just figured I would keep trying different ones. (DH truly thought I lost it (maybe I did!) and thought I was completely insane!) When I regained my sanity a few days later, I thought that maybe I should chill out a bit and give him a little time with each one before trying a new one.
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Still not having much luck, so maybe it's time to try a new one.
DS only started holding his bottled and drinking from it around 11 months (according to my mother that is because he knew I would do it for him and why do it if mom will), so it could be that he'll just be a little late to develop with the sippy cup. We'll see. I can at least take comfort in knowing that I am armed and dangerous with the multitude of sippy cups in my closet.