Anyone have any kefir grains?

I've been slowly trying to culture kefir from the bacteria in the retail stuff. I think it'd be more realistic and safe if I actually just find some grains. If anyone's got any I know they multiply so I'd love to trade or something if you'd like to induct another into the kefir life. I know it's kinda obscure rn, but thanks in advance if you're out there. Yall are cool