I've thought about growing vines and letting it climb on a wall on the outside of my piggie's cage, so that she can eat at her own leisure. I haven't been able to find any plants that are ABSOLUTELY safe for her to eat though. I've heard that tomato vines are generally poisonous, as well as the acid in the fruit being bad for piggies. I'm honestly not sure if its a bad idea to allow plants to grow on her cage at all, but I do intend on trimming the plant as well as giving it somewhere else to climb besides her cage so the plant doesn't take over the cage entirely. I'm just unsure of what options I have as far as plants go. If this is a bad idea, I'm also open to opinions.