If you’re interested in home automation and smart technology, you may have considered adding smart appliances to your kitchen. But smart appliances can be expensive, and you may be hesitant to replace perfectly good appliances if there’s nothing wrong with them other than the fact that they’re not “smart.” Fortunately, there are a number of upgrades you can make yourself for a fraction of the cost that will make your regular kitchen smarter.

While you can spend upwards of $15,000 on a smart refrigerator if you want all the bells and whistles, there are a few DIY upgrades you can make to make your regular fridge a whole lot smarter. If you want to connect your grocery list, check the availability of your items at local stores, and use other home automation features on your fridge, you can attach a simple Android tablet to the front of your fridge for around $60. When choosing a mount, a magnetic mount is suitable for metal fridges, but you want to make sure you choose one with a good warranty, such as the Mippko Magnetic Mount , which has a five-year warranty. While manufacturers won’t warranty your tablet if their product fails, knowing that the company stands behind it gives you a good idea of the quality. You can get a decent quality tablet mount for between $40 and $60.

While most refrigerators are designed to regulate the temperature and humidity inside them pretty well, you can purchase sensors that will provide that information if you want to know what’s going on inside. Keeping your veggies fresh longer or making sure your cold brew is steeping at just the right temperature is easier with sensors. For about $60, you can get a kit like this one from YoLink that comes with two sensors and a hub. The sensors will tell you the temperature and humidity inside your refrigerator and freezer so you can monitor your settings. These sensors will also alert you to temperature changes from a door being ajar or other issues.

A smart range can cost upwards of $3,000, depending on the size and features you want. But you can make your oven smarter with a few upgrades without replacing the one you have now. A Chef IQ smart meat thermometer, which gives you live updates on your meal in the oven, sent straight to your smartphone, starts at around $100. In addition to monitoring, you can set cooking temperatures to alert you when your meal is ready based on the recipe you’re using. To give your oven some voice-activated convenience, consider adding a smart speaker like an Echo Dot that can read recipes aloud, help you with conversions, or answer questions about cooking.