"Snake plants"(aka "mother-in-law's tongue" - formally Dracaena trifasciata)
There's many others though...you want plants that are (1) sturdy enough not to be ploughed under by your snake, (2) something that has no spikes/thorns that might cause injuries, & (3) plants that don't exude anything toxic/poisonous. (at least snakes won't EAT plants, like our dogs & cats might, but stuff can rub off on their skin & potentially be absorbed). On top of that, you need plants that can thrive in the same conditions (amount of natural sunlight, heat & humidity) so many things are ruled out.