Although I haven't been great about introducing Peanut to new people, he does have experience eating and drinking things from new containers. Spoons, bowls, small dishes, big dishes, yogurt containers, food processer bowls, mason jars, and vitamin bottle caps have all served as delivery vehicles for both water and snacks. He'll often climb down my shirt as I'm washing dishes to get a drink from whatever I've just rinsed. Lately, he's started climbing down to get a drink from my water cup after I take a drink. We really shouldn't share water containers, since there is a slim chance we could also share germs, so these get cleaned a lot. But the real downfall is that when Peanut takes a drink, especially from a new or a big container, he usually does a bit of splashing. We both get our faces cleaned!