"Look how tall I am": Measure each child (could use themed strips of images instead of wool)- afterwards put different tape measures in your maths area to encourage children to measure things around classroom.
Christmas Ladder - Sparkle a hallway or wall with this fun ladder instead of tradition tree or in addition to it. Add holiday shine to the foyer, porch, lobby, den or hallway. Create a theme... with color or decos... a tropical Chirstmas ladder? purple? angels? Disney? Peacocks? Saw a peacock themed holiday tree in a boutique last year, stunning! Color and more generic themes might delight in staying all year long. My ficus tree stays adorned all year round.