Take a look at how fun salt and pepper shakers cab be! Not just because of their shapes, although that has a lot to do with the fun, but also because of the fact that designers are trying to improve on the usefulness.
Take the bunny looking ones. They are grinders that are one handed. Bistro grinders look more high tech and have different grinders for the salt or pepper. The maracas are just for fun. 1-2-3-4- CONGA!