I'm so annoyed with all the cups! We use Zoli and Muchkin straw cups for water. No problem with leaking when traveling with water, for the kinds with lids.

Now, MILK is an entirely different issue with the same exact cups and I have no idea how to stop it. If I have any kind of milk in any of the cups we have, the milk just flows out of the straws and every cup I pick up ends up with a puddle ring of milk around it. So now I just use regular cups with straws for milk at home, but I can't take milk out with us in the diaper bag for fear of milk leaking everywhere. She doesn't take bottles.

What cups do you use for toddlers drinking milk on the go?