Cyclamen requires a dormancy period I think, so it wouldn't be well suited for terrarium life.

Sam

The english ivy and arrowhead vine (Nephthytis) are fast growers that would quickly outgrow a terrarium, and Sam is right, cyclamen require a dormancy period, as well as year-round cool growing conditions (terrariums tend to be warm), so it would not do well in a terrarium. In fact, most people find them to be very difficult as houseplants, and they are generally treated as 'throw-away' plants, that you get when they look nice, but once out of flower, just chuck 'em. If you can grow and re-bloom a cyclamen, good job! A better option would be to put these plants high-up, out of your kitten's reach. You could put them on a shelf or get planters that hang on the wall. Since both are vines, this would look very nice. If they still jump up and try to get the plants, you can try spraying them with water every time you catch them in the act (really soak them good, it's only water), which will train them not to touch or even go near plants, or you can buy a bitter apple spray at the pet store. Most cats find the taste disgusting, and they will not eat your plants after trying it! If they aren't currently harrassing your plants though, i wouldn't worry. I have a plant-eating cat, but he has never even attempted to munch my two large english ivies, which are just sitting on the floor, within easy reach. Animals tend to know which plants are poisonous, and they instinctively avoid them.

there is a webstie that has tons of terrarium plans.
it's called cloud jungle and Harry knows plants!!!

not much in season now but it's good to know.

Here is a link that might be useful: cloud jungle