Cheap alternatives to "cigar" beads?

[bonjing]

I have a pound of Scott's beads in my little 9qt and once they stabilized they have been holding steady ever since. after a couple of months if think one of my hygros from the other humi is off I just place it in the cooler and it reads what the beads are rated at.

sooooo, Scott, when you gonna be making some more beads (nudge, nudge)