I used this tutorial: https://happyhooligans.ca/tie-dye-easter-eggs-sharpies-alcohol/
Even not quite knowing what I was doing yielded very attractive results, and I plan to get more Sharpies today so I can make more colors. Also, I decided to use my Dremel to make a pretty pattern on the one I made for my parents (again, something I bought the diamond dust bits for at least 2 years ago, but never did).
**A couple notes about Dremel-ing egg shells: 1. Wear a mask of some kind; that dust is very breathable; 2. Buy the right bits; the ones from the hardware store will not cut it for this kind of project - the cracked egg that I used for my tests is the result of a normal bit from a couple years ago**


