Apart from the obvious regaining currency with an instructor (which you've indicated yourself so no need to lecture on that within every reply IMHO
)...
I've had the license for only a bit longer than you (but didn't get married, so spend the time and money on flying). Still, budget is limited but there is so much more that I have in mind apart from the things that I've done now, it won't get boring.
Firstly, really do those trips (if you like that). It's my favorite thing now to take some people and go places. Can be day trips, can be weekends, can be a longer vacation. I flew from Germany to the South East of Europe with a friend on a 10-day tour and boy, was that an adventure if you're fresh into the PPL!
But even smaller variations to your normal routine (once you've established that) can be extremely rewarding. This Saturday, I flew deliberately close to the sunset (only locally for airwork) and enjoyed really nice views and an improved sensation of what level of darkness I can cope with easily without being night-qualified (I landed SS + 20 min in CAVOK and it was beautiful). Obviously, the proper night rating is a good thing to do in the winter, too, and it's high on my list (next to getting checked out on some other types, maybe aerobatics, maybe a mountain flying course, maybe E-IR in the future.. that should be enough for the coming years to keep me entertained).
Have fun!