Cut your yarn to the length of the garland you’d like, plus some extra for tying. Then thread one end through the yarn needle, and just thread through the “necks” of your balloons, below the knot.
Do a bunch in a row for a garland. (Try different color combinations for holidays and so forth. I just did red because Anneliese’s second birthday was all about strawberries.) You can adjust spacing once the garland is hung, simply by sliding the balloons along the string.
They’ll stay where you put them because the rubber hugs the string/yarn so well. So no knots needed!
You can also thread through several balloons in a row in order to make balloon clusters. I put a cluster of three on the back of Anneliese’s high chair for her birthday.
Such a simple way to decorate. It only takes a few minutes, and it really does look classically festive.
PS. It’s way cheaper to order assorted balloons on Amazon and have them around for various occasions than to buy a tiny overpriced package of balloons from the store when you need them. I don’t even want to tell you how much I paid for these red ones at a local store! Go with Amazon, seriously.