I’ve seen this balloon avalanche on Pinterest pinned several times. There was no link to the source so I can’t give credit to the originator.
I finally repinned it and decided to try it out myself. As a former engineer I tend to overthink things. As I was blowing up the balloons I thought about how the balloons should start up higher so that it would really be an avalanche from above instead of just a balloon drop. That led me to change my balloon avalanche up a bit. My method will work if the doors used are at the end of a narrow hallway.
My kids have birthdays 11 days apart so I tried this twice in a short period of time.
- 2 tall kitchen sized trash bags
- 30 balloons
- painters tape
Split the trash bags in high and tape them together with painters tape. Use painters tape to tape the trash bag combo to the wall as pictured. Blow up the balloons and place on the trash bag combo.
Balloon Avalanche #1
For this avalanche I blew up the balloons really late at night by myself so the balloons were pretty small. I woke up at 5 am on my daughter’s birthday so I wouldn’t miss her opening up the door. She was so surprised!
The avalanche worked really well but I wish I had placed the avalanche a little higher so I could see my daughter’s face as the balloons fell down.
Balloon Avalanche #2
For this avalanche my husband helped me blow up the balloons. He made the balloons pretty big even though I insisted they be small. About half the balloons fell out when my son initially opened the door.
I had to nudge the larger balloons a bit but my son enjoyed it all. I would suggest not blowing up the balloons too big.
I think my kids will be expecting this balloon avalanche every year on their birthdays from now on! Could be a fun tradition.
Update Jan, 2015:
I have indeed been doing the balloon avalanche each year! Here is a video of one I did for my daughter.