I'd keep my advice simple on this:
Do anything that you like.
I mean it; the rest is just a commentary on this.
If you enjoy doing something and can think of a way to combine it with Latin, go ahead and do it.
You can create or recreate — if drawing your own comic in Latin sounds like too big a project, take a comic and write new texts in Latin.
If it becomes a chore, you will grow tired of it.
Be prepared to switch to something else if you are no longer happy with something.
Remember, you are looking for ways to enjoy Latin — unless I completely misunderstand your premise.
The second piece of advice is also general:
Start small enough and keep moving.
If you haven't written a two-page story in Latin, don't start a book.
Start small and grow from there.
Your writing will not only grow in size but in quality.
You need to make errors, look back on them, and do the next thing better.
Don't get stuck polishing one thing; your first work will not be a crown jewel.
Of course, as time goes by and your prowess and interest grows, you can move further and make bigger commitments to hobby projects.
My experience is that starting too big leads to ending too soon.
With the general things out of the way, let me suggest a couple of activities:
Try to use Latin to express daily things.
How would I order a pizza in Latin?
I need to retie my shoelaces — how do I say that in Latin?
What should the minifigures of my medieval Lego set say in Latin?
Find someone to communicate with in Latin.
There must be a number of options out there, but my suggestion is our chat room.
It uses mainly English, but occasionally Latin too.
If you drop by and ask to chat in Latin, I'm sure it won't be met with resistance.
Translate song lyrics to Latin.
A more narrowly defined goal can make things easier.
Coming up with everything from scratch can be quite a task, but translating a song that speaks to you is much easier to handle.
Of course, it doesn't have to be a song but they can be easy to approach.
Write something in Latin.
It could be anything: a poem, a shopping list, a story of the adventurous Lego minifigures, a letter to someone you can't meet.
It's often best to start by emulating something else, perhaps only with minor changes.
Can you tell about your grandfather's bravery like Virgil would have?
Read something in Latin.
This could be whole book, a couple of poems by Catullus, or anything else.
A lot of comics have been translated to Latin.
Start small enough.
Depending on your experience, a textbook can be a good start — but feel free to skip any chapters you don't like as nothing will be in the test.
Read something about Latin.
Did you buy a Latin grammar years ago to check individual things every now and then?
Now is a good time to read the whole thing and get a better big picture.
Or learn about etymology or pronunciation or general linguistics; whatever Wikipedia or other endeavors lead you to.
Watch a movie in Latin.
Help other users on this site.
It doesn't have to be perfect to be helpful.
Ask about Latin.
If you try to do something with Latin, you'll probably encounter some difficulties.
Here's a site full of friends to help you!
If something occurs to you and sounds fun, give it a try.