I have wired security cameras, the manufacturer is Lorex. Do not remember the specific names of the camera or recording device. The key thing here is these cameras are connected by physical wires to an actual device with hard drives so the footage isn't (as far as I know) going anywhere else. You can connect the recording device to your home network and access the camera outputs via IP login or directly with hdmi to a monitor. There is also an app for remote viewing but I'm not sure of the privacy implications. Cameras have pretty good no-light functioning.
I also have a 12ga shotgun. Not much else to say about that except that I practice shooting it as often as I can, and I hope I never have to use it.
Reloading -- this is a really interesting side aspect of having a gun. There's a bit of overhead to this and I can only speak to reloading 12ga hulls. The first thing to do is get a book (I use Lymans 5th) and read the first part, this will save you from buying the wrong things. Look at the charts in the second half, find the shells you will be reloading, see what components are listed in the recipes often. If you use a commonly reloaded shell (STS) that is easier, you can also buy primed hulls online but check the recipes to see if you can actually make anything.
It can be difficult to get ahold of the components (primers, powder) but if you look enough you'll find what you need. If you live in a 2a friendly area this will be easier. I use a Lee machine which definitely has drawbacks but it can reload shells.
I store the shells in cartons of 25, 4 cartons in a box, with dessicant packs. Each carton (batch) I label with primer lot # and powder lot # as well as charge weight, shot weight, shot size, wad type, # of hull uses, etc. This is helpful. I want to devise some way to stamp the indvidual shells too.
Oh and you'll want an electronic scale, the book has good recommendations. The margin of error is something like +/- 0.5 grains, which is easy. I weigh each shell after dropping the powder to make sure it is within tolerance. I have also found it is sometimes OK to use LESS powder by 9-10 grains if necessary, but I wouldn't go over.
I like using translucent shells for visual inspection. The book explains this but shells have varying internal characteristics and some work better with different wad manufacturers.
It's a lot of information and seemed daunting at first, but having a stockpile of supplies and the ability to manufacture your own shells as-needed is really, really nice.
Anyway apart from all that I also believe having a good understanding of heating systems, mechanical systems, and filtration systems is good. I try to do my own vehicle maintenence and repairs but still use a mechanic.
Home maintenence - a good cordless drill has many uses (I like Makita), get various bits, get a set of hole saw bits. A socket set is really useful too. I also like ratcheting tie-downs, they have uses beyond securing things to your vehicle - you can use them in combination with carpentry clamps to hold things securely during work.
There's a lot more stuff but this is all I have time for at the moment. I want to get more into gardening and have tried a few times in the past but haven't had much success with the plants.
