Question

You'd think that with John H. Conway around, this should be like shooting fish in a barrel. One title that comes to mind is

• The Sensual (Quadratic) Form

and there are more goodies if you look at his bibliography. For example,

• Character Calisthenics

or

• The $\text{The} \ \sqrt{\text{Monster Construction}}$ \sqrt{\text{Monster}}$ Construction

I also like the paper (both the title and the contents!) by Andreas Blass,

• Seven Trees in One