21 Classroom Things Worth Purchasing from the Dollar Tree - I love bamboo and green. When I found these lime-green border placemats I knew they were the perfect solution to hiding my eye-sore science kits. I've got you hooked up with my no-sew tutorial on how I used shoelaces and pins to create a curtain above my cupboards. I also have two more hung on a wall in my classroom to create a calming wall hanging and to break up some visual space.