You already know that IKEA's picture ledges are super functional — and here's another idea that only further proves it. Six different rails stacked on a wall gives this simple bathroom salon-like style. See more at Apartment Therapy » - GoodHousekeeping.
"When you have guest this should be in their room or the bathroom they will be using." True, but it should be there for you too. And I am a BIG believer in lots and lots of hand towels that are sparkling clean stacked right there on the counter.
Photo booth 8x10s. I don't know. I'm not sure if I could ever be a parent who decorates her house based on Pinterest ideas. I'm guessing my kids' rooms will just be like spartan walls maybe with stains from where I wiped my hands when I didn't feel like getting a napkin.