Last year I gave my mother this doily. It's pretty good sized- probably 14 or 15 inches in diameter. I had some of the same crochet cotton leftover and pulled out my 99 Little Doilies book to make some small matching doilies:
They are small, all right. More like coasters:
And I still have some of the cotton thread left over. Maybe for more small doilies for next Christmas.