I buy lots of helium balloons. All of the birthday parties in my family are hosted by me, and I handle all of the decorations, party planning and food. Who doesn't love grandma's cooking!
So as to arrive home from the dollar store with all of my helium balloons, before I leave the house, I toss a hammer in my hatchback. What? Yes!
Hold your bunch of balloons tight, about 10 or 12 inches away from your "bouquet". Tightly wrap the rest of the length of ribbons around the handle of your hammer and place into your trunk, hatchback or back seat. The hammer is heavy enough to act as a weight to keep things where they belong. I have tried all kinds of ways to corral balloons, tieing them to different parts if the car, but this is the best way I have found, and no knots to untie. When you arrive home, simply pick up your hammer and get into the house. No escapees should head toward the sky!
Have fun decorating for your next party!
Source: My own idea
If you buy balloons from Dollar Tree they have a basket full of individually heart, bear weights (it's free with a ballon purchase).
Don't release balloons of any kind into the air or yard, where they will be consumed by birds, turtles, other wildlife, get into the ocean and kill fish and marine animals; float into aircraft propellers, and wreak ecological havoc. Around here, helium balloons are offered on Buy Nothing groups and given a vastly extended lifetime at the next parties. Dispose of in a responsible manner.
Not only the environment side but the fact any airborne mylar balloon swooping into the sky...zillions of highline and electrical lines catch them...and that will cause the spark/connect for power outages..not just small ones..a well as set off fires.
Now what I do for my transportation of said heliums... always have a 30 gal clear trash bag tucked under the car seat for any emergencies..includes a purchase of these. Another not thought of...if you hit a deer on the road..yes, road kill to the freezer...call your DNR/Sheriff normal number and they will give you the permit, you can wrap this bag around your catch. Often you hit and kill doe or small ones (or need dispatched.)