I ran across this great teapot, cup, creamer and sugar listed in the FDIM Museum (Fashion Institute of Design & Merchandising in L. A.) gift shop. https://thefidmmuseumstore.org/
Great arrangement of sugar (on top), creamer, mug and tea/coffee pot.
A real challenge to get all the diameters made so the entire piece interlocks!
The rest of the items are worth a peruse too.