I believe that children deserve to learn in a very carefully prepared environment. One that is free from extra clutter on the walls, on the shelves, on counters, etc. Instead of cutesy posters on the wall like this.
How about a piece of handmade art like this? This beautiful pegboard cross-stitch was made by Allison from Dream a Little Bigger. Love it!! I want to replicate this in some way for my classroom. Unfortunately, I don't have much empty wall space. One is windows, two are white board/bulletin board combos, and the fourth is cupboards. It would look lovely in my house too, though.
Or a project that the class has worked collectively on? Or individual children's art, tastefully displayed? There are many options for enhancing an early childhood environment with aesthetically beautiful decorations that acknowledge a young child's ability to appreciate loveliness.