Slow cookers are cheap to buy, economical to use and they're great for making the most of budget ingredients. They offer a healthier, low-fat method of cooking and require the minimum amount of effort. Really, what's not to love?
If you're short on time in the morning, prepare everything you need for your slow-cooked meal the night before, put it into the slow-cooker dish, cover and store in the fridge overnight. Ideally the dish should be as close to room temperature as possible, so get it out of the fridge when you wake up and leave it for 20 minutes before turning the cooker on. If you need to heat your dish beforehand, then put the ingredients in a different container and transfer them in the morning.