I feel I've read this question before, but I am currently surrounded by packets of balloons!

I have a stock in my apron, but the extra supplies are just everywhere. I keep sticking them in carrier bags, still in their qualatex packets. How do you all keep track of what you have? I never really know how much of everything I have got and it's a real muddle when I order things.

My solution is pretty low-tech:  Other than what I have that I bring with me to gigs, I have one plastic box full of the bags of 260s that I have already opened ("active storage").  And I have other plastic boxes with spare bags in alphabetical order of color (labeled with things like "260s blue-gold", "260s green-red").  I have a Word document listing the various colors and how many I have left in the "spare bags" storage.   Whenever I open a new bag from my "spare bags" and put in "active storage", I update the quantity in the Word document.  Then when I order balloons, I only need to reference the Word document.  Other sizes/shapes of balloons have a similar system.