Underseat Storage Ideas Without Stock Airbox

So my 77 KZ1000 has air pods, so along without the stock airbox...the small tray can't be used. What have you guys come up with?

I have an early version of this on my ZRX. It easily holds a gallon jug. Perhaps you or somebody here could fab one up for the KZ.

www.kwickstand.net/Hyper-Formance.com/3....d_Storage_Boxes.html

At least they're honest about the price....pretty cool though!

I used plastic canvas from Hobby lobby its for needle point thingies that grandma makes and your lady sticks to the refrigerator that fall off all the time. I found Black and went to HF and bought zip ties, 69 cents a sheet. I like to wrap my pack rod in a reusable shopping bag and cruise the high country. It keeps everything off the battery terminals and in one place. It will also hold a bottle of wine, crackers and cheese. Blanket optional