Artificial grass does not make for good bedding and a tortoise cannot burrow in it, but a tortoise will happily walk around on it. While not idea, using artificial grass under a tortoise’s feet will not do any harm.
Tortoises do tend to like the rain! Some species are more acclimated to it than others, given that they are native to tropical rainforests, but all can have a bit of fun in the rain! In the wild, tortoises are outdoor animals so exposing them to safe amounts of rain will replicate many of their natural habitats.
Pet tortoises need an environment that encourages a healthy body and mind. Some may call these items toys while others may consider them enrichment. No matter what they’re called, tortoises do need a variety of interactive objects to stay healthy and happy. Logs, rocks, bathing dishes, moist hides, and dirt mounds are good choices for toys and enrichment.