I don't grow Resurrection Plant (Selaginella lepidophylla) but I've read that they can be propagated by division. Cuttings can be taken during the time the plant is actively growing; lay the cuttings atop the soil and water them to initiate growth.
Hopefully someone who actually grows these interesting plants will be able to offer advice and tips for you.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!