72 Sanford col-erase pencils. They rule, because you can erase them. Also they were really cheap! The disney animator I met in August gave one to me, but I framed the pencil rather than using it.
Well, now I have enough pencils for some years I think.
By the way, I thought this would be a good Idea at first, but it turned out really scary (also, I never tried Kool-Aid):