when i was a kid in MN they were thongs, lived in WA some of my youth and was thongs too...but at some point, I really don't remember when, they became flip-flops...presumably so as not to be confused with butt-floss...during my short time in the military they were shower shoes...
growing up we moved around the country a time or two, and at different schools I've drank water from a drinking fountain, water fountain, water cooler, and at one school I went to, a bubbler...a common prank was to give someone a 'bubbler ride' i.e. place victim atop drinking fountain and turn it on, much hilarity ensues..
I've heard rubber bands called 'binders'
water faucets called spigots or taps or hose-bibs..
I remember being in TX late 80's and every kind of soda was refered to as a coke... i.e. hey ya want a coke? yeah sure...okay what kind? 7-up...