Color target ideas?

A few years back, someone (I think who was on this list) mentioned that the Land O Lakes butter box was a great color test target for color matching. That proved to be a great idea. I've used it in my classes since it is very affordable for students, easy to obtain and a real challenge - a lot of colors to get right in a print. Unfortunately, the depiction on the box is racially insensitive. Does anyone have any ideas of another common consumer product that might make for a good color test target for a color matching exercise? many thanks! -Edward Bateman University of Utah