I saw this soap container at the Denver airport and it made me smile.

#1 I always find myself pumping soap from an empty container. With the see through soap container I can know right away if I should be wasting my time or not.

#2 This is super optimized for the janitor staff. No longer do they have to check all the soap containers. It is very obvious which ones need to be refilled.

I really enjoy seeing optimizations that help the customer and reduce support time (in this case the janitor staff time).