For us, it was buying a van. Started out with a cheapish used Sprinter (do NOT do that, unless they had impeccable service, they are a service nightmare... even for a mechanic), after enjoying the van travels we splurged on a new Ford Transit... we just flipped 50k miles on it in 4 years, and it's 99% travel only miles. The "conversion" was cheap, maybe $4k total... platform for a queen sized bed (I'm 6'4", need the length and sleep is the most important aspect for me), space under the bed for dogs, gear, food. Some lights, a couple fans (splurged there, cheap were noisy), no solar, no bathroom (well, a bucket for emergencies), no kitchen, nothing complicated.
Skipping 2020, we've done 45 week trips every year since 2016 plus a ton of more local trips (within a days drive). Having a comfortable bed, all the stuff we need to eat well (we don't eat out much, too disappointing), and the ability to drive/park anywhere means we're free to just go anywhere. It's gotten shitty since the plandemic, previously private/unused camping spots became over-run, but it's getting better now.
We tend to do 23 days of "rough camping" (no showers and rarely toilets, dispersed camping as often as possible), and then 12 nights of either nice campground with showers or ABNB. Though sometimes we will string together more campgrounds, we did that while driving the 101 one year (lots of state campgrounds made it easy). Gone are the days of just pulling up to Any campground and being certain you'll get a parking spot though.... and that makes it a little harder to get some momentum to figure things out.
That works for us. Maybe it'll give you an idea.
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