Hrm... 4 d20s (my precioussss.... *rolls* 19, 20!) and 14 d6s (2 normals, 12 from a box).
My wife has ~6ish d20s, and... uhh... many d6s. 8 "jelly" d6s for up close and personal, and ~72 (2x box of 36) for getting rid of the mooks. Plus random extras.
Funny thing, mooks... we normally use one box (say, blue) for the mooks, and then she uses the other box (say, red) for rolling fireball damage on the mooks. I guess dice cancel each other out.