Can anyone recommend a good cup that has a straw attachment? I've been trying to get my daughter to drink from a sipper cup but she only takes a small amount at each sitting. I have recently tried the watered down juice in a popper and my daughter sucks on the straw really well. I had a quick look in the chemist and the only straw cup was a tommee tippee one that was suitable from 12 months. My daughter is 6 1/2 months. Any suggestions would be greatly appreciated! Thanks.