Cheap alternatives to "cigar" beads?

I have some Heartfelt beads and they're expensive. I've been doing research on the Kitty Litter. There are a lot of testimonials about Litter Pearls Kitty Litter. They are odorless, silica, and said to keep rH between 64-65% humidity. They are meant to absorb AND evaporate moisture. I haven't gotten any yet because I'm looking for more info on the micro version.