I have had a cat for a few years and I use the following tools to help with cat maintenance:
Pet Feeder
Most cats are good at self regulating their meals. But many pet cats are often a little overweight. Some research shows that animals on slightly low calorie diets live longer. If you care to make sure you know how much your cat is eating and want to have better control on the diet and match it with it’s activity level, and you use dry kibbles anyway, then an automatic cat feeder is very useful. It also helps save a lot of time, there’s a more set routine for the cat, and you can be gone for a day or two and not worry about feeding the cat. I have tried lots of different feeders, and this one is the best so far.
Pet Fountain
Cat’s prefer drinking running water. They think stagnant, stationary water is unclean. Your cat is more likely to drink water from a fountain than from a dish. The leading cause of kidney issues in aging cats is caused due to not drinking enough water. So if you care about reducing the odds of kidney diseases in your cat, a pet fountain is a good investment. I have tried many different ones and found this one to be the best.