I’ve been through about a bajillion sippy cups that have purported to have been “spill proof”. Typically, they are…so long as my kids don’t actually use them. We’ve been using these Nuk Gerber Graduates sippy cups for over a year now and after my latest batch was delivered (somehow they disappear around our house quicker then socks) I realized how awesome these cups really are.  True they are BPA free and easy to take apart and dishwasher safe, but the real magic is that I actually threw one of these in my favorite messenger bag on a recent park  jaunt and even though it accidentally ended up upside down on top of my iPhone, nary a drop was spilt. They’re pretty cheap on Amazon (though there are some people who are charging WAY too much for them).