(I have to find a trick to get the wax out of my measuring cup next.)
Carefully place a wick in each egg. It doesn't really matter if they stay up strait. The wax helps with that once it is in the egg shell.
Once the beeswax is melted, using something you can throw away (in our case, cardstock and tape) make a funnel.
Put the funnel in the egg shell next to the wick and pour a VERY small amount of wax in the bottom of the egg to close up the hole. Let that cool for at least an hour so it is good and hard before you pour the rest of the wax in (we did a botany lesson and then came back to it).
Allow to cool naturally. If you put them in the fridge, they will crack (ask me how I know). When you are done, you should be able to peel the egg shell away rather easily, and you have an egg shapped beezwax candle!