Blown egg ornaments are inexpensive to make, and a lot of fun for the craft-minded. However, they do take some time so plan ahead.
You will need:
Eggs - keep the carton
Tiny drill bits
Something long, thin, and sharp - my father uses a medical instrument used to prick the skin for a blood droplet test. It looks like a claw.
A large bowl
Good lungs or a bulb for blowing eggs; you can also use a syringe
Let the eggs sit out at room temperature for an hour. This means, of course, that you'll have to use them within a day or two. Try to blow eggs just before a cookie-making session or have quiche for dinner. Decide which end you want to be the top; that end will get the larger hole. Take a tiny drill bit and a slightly larger one; use your fingers to make the holes in either end. (It is a bad idea to use a pin or a needle to make the holes because this will lead to cracked eggs.) Use the sharp thing to poke around in the egg; you want to not only break the yolk but make sure all interior membranes are broken.
Blow slowly and carefully into the smaller of the two holes; the egg should come out of the larger. If you blow too strongly you can crack the egg. Artificial aids are good to use if you have them. Set the blown eggs aside on a paper towel. When they are all done put the egg stuff in the refrigerator before proceeding. Get a bowl of soapy water; immerse the eggs. (You can also use a syringe to fill the eggs with soapy water.) Put your fingers over the holes and shake each egg so that the interior is throughly washed; drain and set aside.
This is the time consuming part. Put the eggs someplace until they are completely dry; this can take several days.
Now you will need:
Nylon string to hang the eggs; ribbon deteriorates over time
Hot glue or Krazy glue
Spray lacquer or clear nail polish
Spray paint and craft paint
Any decorations you wish to attach such as sequins, plastic gems, or ribbon
Once the eggs are dry, cut five-inch lengths of the string. Tie a knot in them to make a loop. Feed the knot end into the bigger hole of the egg and glue to secure. Make sure the hole is completely plugged; take a little glue and seal the other hole as well. Once the glue is dry, hang the eggs with cardboard or newspaper behind them; give them a light coating of spray lacquer. Turn them around and repeat. Let it dry and then give them a second coat. (This strengthens them.)
Use the spray paint to give them a base coat; careful spattering can acheive an artistic effect. Paint names, symbols, or pictures on them with the craft paint; glue confetti, glitter, or ribbons on as desired. Decoupage is also a good technique if you know it. Tie a bow around the base of the loop with a pretty ribbon.
Store the egg ornaments in the carton. Over the years you can build up quite a collection; my parents have several dozen, some going back for three or more decades.