I went back to the grocery store and found a travel kit for six or seven dollars. It had a couple tubes, a spray bottle and several little containers in this same family.
I used the spray bottle for a mix of baking soda and water to use as CA accelerator.
I made three sizes. I decided the medium is best for my use, although the large might be useful in a jumbo case. The tiny one I made for my rosewood and sitka accessory box.
I also split the sponge in my PW soundhole humidifier and put gel beads in between those.
I check the beads about every week or so. They last much longer. My PW humidifier lasts 3 times as long now before needing water.
I keep a soaking bottle of beads that I swap in and out.
The distilled water was <$2 and has lasted me over 4 months so far with 2/3 left to use.