To begin with, use the back of table knife to crack the egg ⅔ from the large end of the egg. Then use your fingers to remove the top, and empty the yolks into a bowl. If the opening isn't large enough, you can use your fingers to break off a little more of the shell to widen the hole and make it large enough for the bulb.
Rinse the egg shells with some water to clean to them off.
Next, remove the grape hyacinths from the pots and slowly and carefully knock off as much dirt as you can, and use your fingers to untangle the roots and gently pull them apart. For the African violet for planting, remove it from the pot. Use your fingers to gently remove enough soil from the roots so that it's small enough to fit into the empty eggshells.
Now you're ready to plant the plants in the eggshell pots. Add a little of the soil that you removed from the pots earlier into the bottom of the eggshell. Add the plant into the egg planter, working carefully to make sure the roots are all tucked in. Fill in any spaces around the plant with more soil. For the grape hyacinth bulb you can use something small like a very small spoon, pencil or wooden skewer to help push the soil in around the bulb.