This is a decidedly low-tech resource, but I’m sure that there are some elementary school teachers who will like these measurement word wall posters from Mary at Guided Math. The set of ten posters illustrate units of measurement in terms that students can understand. For example, the poster for millimeters depicts a dime and states that one millimeter equals the thickness of a dime. You can find the posters on Guided Math and on Scribd.
Math Measurement Word Wall
H/T to Kelly Hines.