I disagree with DoubleJ about the toxcity of pothos. His statement is incorrect, "...and from my experience... pothos is not a toxic plant. I have pothos in with my Chameleo calyptratus (not to mention my amphibian and gecko tanks), and they munch on it incessantly. " I don't know if you have dogs or cats, but it is considered toxic to them. Go to any cat site or look up 'toxic plants' on google and you shouldn't have any problems finding a long list:
The following list was found in 2 minutes on the web, all of these are considered toxic to cats. I guess it is up to you wether or not to use them with other animals. I have highlighted some of the plants which can be found in terrariums.
Baby's Breath
Bird of Paradise
Begonia
Bird of Paradise
Caladium
Calla Lily
Clematis
Cordatum
Corn Plant
Cornstalk Plant
Cyclamen
Daffodil
Devil's Ivy
Dieffenbachia
Dracaena Palm
Dragon Tree
Dumb Cane
Easter Lily (in cats!!)
Elephant Ears
English Ivy
Foxglove
Fig, Creeping
Fig, Weeping
Foxglove
Geranium
German Ivy
Gold Dust Dracaena
Golden Pothos
Hemlock, Water
Hens & Chicks
Hyacinth
Hydrangea leaves
Impatiens
Indian Rubber Plant
Ivy
Ivy, Boston
Ivy, English
Ivy, Pothos
Jasmine
Jonquil
Lantana
Lily of the Valley
Mistletoe berries
Mother-in-law's Tongue
Morning Glory
Oleander
Peace Lily
Philodendron
Poinsettia
Potato Plant (green fruit, stem and leaves)
Pothos
Primrose
Rhododendron
Sago Palm
Scheffelera
Silver Pothos
Spider Plant
Star Gazer Lily
String of Pearls
Striped Dracaena
Sweetheart Ivy
Tiger Lily (cats!!!)
Tomato Plant (green fruit, stem and leaves)
Tulip bulbs
Weeping fig
Wisteria
Yew, American/English/Western
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Quality Captives