Super Pet Keep-A-Critter Small Pet Home or Carrier -$5 to $15
This critter cage is a great little container to carry your new babies home in. It has enough airflow, but definitely don't place it in the sun on the way home. These can vary in price from $5-15 depending on size.
Super Pet Come Along Carrier -$12
This carrier is fine for a quick trip to the vet or a petsitter's home..... but is not a good idea for longer trips. The mesh windows can be easily chewed and I've had several rats gnaw their way out straight through the zipper! Definitely have someone keep an eye on the ratties if you are planning to use this for longer traveling.
Lixit Critter Space Pod-$11
My boys love to cram themselves in here. It is easy to take apart and clean. It is plastic, so can be chewed and easily broken. The tips that are meant to hang from a cage broke in the first week, so now it sits on a shelf.
Ware Double Fleece Hang-N-Hammock Small Pet Sleeper -$5 to $10
Personally, as fast as rats chew hammocks, I prefer to make my own. I have a good 10+ hammocks at any given time so I can switch them out and toss away the chewed up ones. The store-bought ones are a waste of money. Rats chew the nylon straps all too often.
Super Pet Crinkle Tunnel-$15
Rats love going through tunnels. You can make tunnels out of old pant legs and hang them up in the cage.
Lixit Corporation Quick Lock Crock-$5 to $11
These are great, easy to clean bowls. My rats have never tried to chew on these crocks. You can unscrew the bowl out while leaving the base attached to the cage; making it easy to remove for feeding time.
Super Pet Guinea Pig Igloo Hide-Out-$5 to $15
These are great for rats to pile in and snuggle. They are easy to clean and don't get stinky. They are easy chewed. But affordable enough to replace.
Super Pet Perfect Chews for Rats-$6
I'm not too big on died wood(a lot of these toys can be made out of pine wood). I would suggest finding safe wood outside for chew toys that are clean, free of pesticides and insects. Unlike rabbits, rats teeth do not tend to have problems being too long. They naturally grind them down throughout the day, so it is not as important to provide chew toys for them as it would be for rabbits. Instead, provide activity and objects to keep them entertained such as wheels, tunnels, rolling balls, climbing gyms etc.
Ware Plastic Flying Saucer Small Pet Exercise Wheel, Large, 12-Inch-$22
This is a good alternative to metal wheels that have dangerous rungs. There is no place for toes and tails to get stuck in on this saucer. Poop gets mushed on the rungs, so you'll want to scrub it often.
Super Pet Giant Chinchilla Run-About 11-1/2-Inch Exercise Ball
Rats have poor vision and being put in a rolling ball can sometimes scare them. I've known rats who loved running around in their ball, and others who sat there and pooped and looked panicked. It is not harmful, but may not be the best idea for an animal with poor vision.
Super Pet Lava Ledge-$9
These are great to keep rats' nails filed down. You can place them at the bottom of ladders, houses, or use them as mini levels for them to jump on.