When occasion finds you waiting at a Starbucks with four little ones and some time to kill indoors, one just cannot make it simply 4 child vanilla steamers and a whole lot of people watching.
Instead, how about a big-brother-led impromptu preschool activity: Find the "B."
Unless you already carry your own book everywhere you go...
...or if a vanilla steamer IS all that matters, really.
Make the most out of whatever and wherever the unexpected tasks of the day takes you.