Several of us had noticed variations on naturally dyed eggs on facebook and Pinterest, and wanted to see how well the techniques worked. We tested spices, tea and coffee, onion skins, cherries, grape juice, and red cabbage (which oddly enough makes a really pretty blue). Maureen did one batch by boiling the eggs with the onion skins and vinegar in the cooking water, and those came out a really deep rich streaky brown, looking almost woodgrained themselves.
Cat and I plan to do a full story on this for the Spring 2014 issue of 365 Being, with directions, and some more dye materials and techniques tested by then. These may not be quite bright enough to excite the average six year old, but if you are doing a vignette with old lace and rusty bits, the muted tones could be just the look you are after. That's a whole year away though, so in the meantime, you might want to catch our current issue, available at 365being.com.