After seeing @Hank Scorpios post on laundry I thought I'd add a little about cooking.
I'm no expert and I kind of go for minimal effort. If you like to throw ingredients around in the kitchen and make pies, etc. then this isn't for you.
This is for the "I live on my own and only cook for me" kind of guy who doesn't want to spend an hour prepping or cleaning the kitchen after.
A few things I own which are everyday items:
1) A nice toaster oven. I have the Breville Smart Oven (http://www.brevilleusa.com/the-smart-oven-pro.html
). Spend the extra cash on a nicer oven with some convection and other cooking features over $40 Black & Decker at Walmart. The reason is that this is your main cooking area. It's not going to use as much power as a regular oven and it won't generate as much heat which you'll have to pump out of your place like a regular oven.
2) Get a nice meat thermometer. I use Themowork's Chef Alarm (http://www.thermoworks.com/ChefAlarm
). The important thing is that it be reliable and have a replaceable probe. They include a cooking temp guide which you can hang on your fridge for references to what is considered done for meat.
3) Get an Instant Pot (https://www.amazon.com/Instant-Pot-IP-DUO60-Multi-Functional-Pressure/dp/B00FLYWNYQ/ref=sr_1_1?s=kitchen&ie=UTF8&qid=1470590410&sr=1-1&keywords=instant+pot
). This is great as both a pressure cooker and slow cooker. The thing here is that it's a "one pot solution" for a lot of recipes. Maybe you're making meat sauce for spaghetti and need a second pot to boil some noodles in but that's easy enough to clean up. What we're really shooting for in "toss it in the pot and let it do it's thing.."
This takes care of just about everything I cook minus any grilling.