Congrats on your PPL!
My suggestion would be: do whatever you feel more comfortable with.
That could be: fly alone, take your partner/family for an scenic flight...anything that can be special.
If I remember correctly, my first flight after getting my PPL was a small cross country flight with another recent PPL.
Since that I have done loads of cross country, scenic flights for friends/family etc.
Now that you have your licence, you can keep learning and getting yourself challenged (within reasonable limits!)
The key thing: enjoy and keep flying