Now. To make these funky semi-psychedelic eggs (again, be careful with the glue so things don’t get too psychedelic), take your hard-boiled egg and some rubber cement.
Drizzle the rubber cement over the egg. You can leave one side or end glue-less–it will just look like you planned it that way. I had much better luck, both in terms of aesthetics and in terms of getting the glue off the egg later, when it was drizzled on pretty thick instead of brushed on. Let your eggs chill out for a few minutes, until the glue is pretty dry (if you’re using cold eggs, that will help.)
Choose two coordinating or complementary colors and dunk the egg in the lighter color first. Let it sit there until the desired shade is reached.
Allow the egg to dry, then peel off the glue (side note–my 5th- and 3rd-graders seem to do a lot more actual school than I did when I was their age because they knew nothing about spreading Elmer’s white glue over their hands and then peeling it off after it dried. Children truly are the future, guys.) Then pop the egg in the darker color for just a few minutes. They’re so cool!