One of my friends did this with her baby. She took the valve out of the sippy cup and just gave her baby sips. She also used a regular cup from time to time. It was a bit messy at first but they soon both got the hang of it.
I had to do that, my 9 month old never took a bottle either. The couple of times I had to leave her with daddy when she was 4 months old, he used a medicine dropper (we got it at riteaid) or a shot glass to give her bm.
DD took a sippy cup. The Nuby brand with the silicone tip that looks like a bottle nipple. She however never learned to suck, instead she bites it and gets her milk that way. She only got it for a week while I pumped so a bite could heal.
We use a sippy cup. He only gets water from it, though. I like the Tupperware brand cups. They do not have a no-spill part in them, so they can be messy, though. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/lol.gif" style="border:0px solid;" title="lol">