I know that the name sounds confusing. A safe activity on a high wire for kids? Trust me. The kids won't even get off the ground but they will still be able to practice their coordination and balance. Here's how it works:
You will need:
Masking Tape (or chalk if doing it outside)
Adequate clean space
All you need to do is make a "high wire" or "tight rope" using the tape or chalk by making a straight line on the carpet/sidewalk. For the younger kids, they will have fun just trying to walk in a straight line without falling over. You will likely need to demonstrate how to do this, since they might not be consciously doing it yet. And don't forget to teach them to put their hands out to the sides!
Preschoolers could even try to walk backwards, or on their tip toes, or both! And if your child is particularly acrobatic, try and have them do a hand stand, and then "walk" along the line.
That's all there is to this activity. Do you have any other variations to try?