Here's the thing about this: It's entirely up to you. Things dont stay drab and boring on their own (well, outside of a job, I mean).
I had to learn this one the hard way myself. I went through that whole "everything is boring" thing too.
What changed it for me was I started going to conventions, mostly since I wanted to try the whole cosplay thing. But that meant dealing with lots and lots of chaos over the course of a tiring weekend. I cant emphasize the word "chaos" enough.
What the convention experience has taught me is that when I want things to be interesting... I have to go and make them interesting. They wont just get totally amazing and fascinating on their own (usually).
I mention the conventions, but just as an example. Being expensive as all heck, that sort of thing doesnt work for everyone.
But there's so many other options. Just getting OUT every day, ranging as far as you can. More than a few times, when talking about loopy stuff I've seen, I've had people say things like "wow your life is so much more interesting than mine". And indeed, some of those things I've seen are definitely "interesting". Like the time the gas station cashier randomly chucked an auto-drone (as in, it has literally no controls and just flies around at random) into the air. Which left me to chase the thing down and yank it out of the air before it could smack into someone's head. Or there's some of the weird things I've seen outside, like that time when some dude in a cape just pulled a drum set out of nowhere and started banging on it on the side of a road (???). I see weird stuff so often that I dont get surprised very easily now.
But none of this happens because I go to craaaaaaazy places. I just GET OUT EVERY DAY. And not to the same place all the time. Gotta go to different places. Gotta explore.
But also, gotta try new things. If you just stick to doing the same things all the time... yeah, it's gonna get stale. Started getting into board games myself recently. Which has led to some interesting things. Firstly, it meant going out and locating a store that actually sells the bloody things. Second, it meant actually going to that store... a rather strange place, entirely new to me, with a different sort of customer base than most stores. And third, it meant actually having to be in an area that I've not had to go to before. This screwy cluster of buildings and crowded roads. Somewhat near here, but I'd never had to actually go there before. In the process of starting to go over there more, I also discovered some new driving routes.
That's alot of stuff happening JUST from starting on a hobby that involves something as calm as board games! And note the word "starting" there. As I go, there'll be more and more new aspects of it to find. I'm looking to maybe even join a gaming group, for instance. Who knows where that might go.
But this only happened because I was willing to try something new. THAT is what keeps things interesting and what gives you more options.
Alot of us on the spectrum have a very hard time doing this. And oddly, alot of us seem to not NOTICE that we have a hard time doing this. I've now lost count of the amount of times when I hear someone go "But I do PLENTY of things and it's still boring!" and when I learn more, it turns out that... they barely do anything. They THINK they're doing alot of things, but that's because their routine has been so bland for so long. I had that problem myself for the longest time.
Seriously. Just get out there and DO stuff. Stuff that's different. You like photography? Try new types of photos you've never done before. How about those cool photos of ultra-small things people do sometimes? Those are sure neat. Or get another hobby... something to do other than just photography. Or get in the car and drive around at random for no reason... see what you might find.
You'd be surprised, really, at where things can take you. If you let them. You dont have to go to big expensive car shows to get really cool experiences. That's just ONE route that can be taken. There are so many others.
....Also be aware that just because someone else's life LOOKS exciting, doesnt mean it really is. People like to show off the flashy side of things. What you DONT see is the drab stuff. For all you know, that guy's daily life could be extremely dull. Dont fall for everything you see online... PARTICULARLY on social sites or places like Instagram.