I am a sucker for a cute sugar and creamer set (which might have something to do with my obsession with multiples). But, there is something challenging and very satisfying about making two distinct pots relate to one another.
A potter can has several options that help two pots seem like they belong together. Color is one of the easiest elements to incorporate into a set and it unifies pots regardless of how diverse. Other design elements such as surface treatments, embellishments, or shape will also help relate pots to one another. However, these elements are less easily translated across forms.
Potters are faced with the task of creating relational genetics among the ceramic members of the set in many situations (dinnerware/tea services/etc.). If you are looking for a creative challenge, perhaps you can make a sugar and creamer set. Send me a photo so I can be inspired by your work!