I second trying straws, and also mix it up a little- I give my DD herbal teas quite often- raspberry, mint, orange spice, chamomile, etc. She only drinks things cold so that's how I serve it to her- over lots of ice. Just make sure to read the labels because some teas will have green or black tea mixed in with the herbal leaves..... I don't know about you but the last thing my DD needs is any caffeine <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/winky.gif" style="border:0px solid;" title="Wink"><br><br>
I also juice a little bit of fruit- apple, strawberry, orange, some grapes, watermelon, etc.- to add to a sippy full of water just to slightly flavor it.<br><br>
You could also make homemade popsicles for her- it's a nice treat in the summer and will get a few ounces of liquid in her.