Some random useful information:
Perdue Veterinary School lists plants that are toxic to animals, and especially pets. Click on each link for the plant photo, description, symptoms, first aid and more.
See my basic article called How NOT to Poison Your Cat for some general ideas on cat proofing — hint: it is a a lot like toddler-proofing your home — and for the same reasons! 
One of our cats was chewing on an electrical cord. Not good. It turns out her gums were bothering her. Nipped in the bud so to speak. More intensive at home dental care was begun.
With the holidays coming:
Keep wrapping paper, ribbon, scissors and tape away from cats. Clean up any bits leftover from wrapping gifts. Your cat may try to eat some of it!
No traditional holiday plants are safe for cats!!!
If you can reach the plant, so can your cat.
If you use a wood or pellet stove as many of our neighbors do, protect your cats from getting burned paws or singed fur.
Some Possibilities:
- Keep your cats out of the room the stove is in
- Don’t use your the stove
- Clicker train your cats to avoid the area
- Buy tall fireplace safe un-tippable three wall barriers to keep your cats at least 2 feet from the stove
None of these is actually foolproof, except not using the stove. Jennifur was taught to avoid the wood stove. Two winters ago, after one of her more exuberant mad dashes around the family room, we smelled singed fur. Haven’t used our wood stove since.