I made the balloon arch : ) I used balloon tape and LOTS of balloons. Here are some links to the supplies. Pretty simple, just a little time consuming and I suggest you use a compressor or some sort of balloon pump.
Ballon Tape : https://amzn.to/2ZRhotW
Balloons : https://amzn.to/2LtTwai
Balloon Pump : https://amzn.to/2MSzEkm
Balloons compressor attachment : https://amzn.to/2ZKAr91
Cake : Alley Cakes
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