A nice pepper grinder like apeugeot or unicorn and quality pepper corns, or a salt cellar filled with a nice flaky finishing salt like maldon salt get used with almost every meal for me.
I like cast iron but there's some great carbon steel pans out there that are a bit lighter and a bit quicker to get up to searing temps. I've got wagner cast iron but my debuyer steel is a bit easier to use and just as non-stick. Add a chain mail scrubber to help keep it clean.
A vacuum packer is a great way to freeze bargain meat deals or leftovers. If you want to add onto that get a sous vide circulator like the anova. You can have a lot of fun experimenting with new ways to cook things, and its great at helping you reheat those vac packed leftovers.
I love my electric pressure cooker for easy soups, stews, quick chuck roasts, etc.
The presto pizza pizzazz seems like it'd be a gimmick but it actually does a pretty great job at making pizza, toasting bread and sandwiches, and making snack foods like pizza rolls and taquitos. If you've got kids, its an easy relatively safe way for them to make some snacks without having to use the oven.
A bit less conventional but a "real" popcorn popper is great if you like to do movie nights. If you're a beer fan you might consider learning to brew your own beer. If you're a coffee person you might consider some better equipment for that.
Meat grinder, sausage stuffer, meat slicer?
Amazon's echo is a pretty nifty gadget too and I often use it while cooking, having it set timers, do conversions, play music, etc.
I usually just use my teeth or just point a gun at the bottle until it gives up.
