The fact that you ask that question suggest you already code enough during work hours and you need to do something else after work.
Did you used to code for fun before it was your work? Then maybe it's a good idea to accept that you are not going to find in fun as long as your job is mainly coding (but it might become fun again if you don't mainly code as a job)
Did you drink the kool-aid that a developper is supposed to code for fun after work? Then maybe it's time to question that belief. A lot of professionnal developer that used to do that came to term with the fact that they'd rather do something else from their free time after coding all day.
After 10 years coding professionally, the only times I'm going to consider coding after work is as a mean to an end. There has been some occasions, but I wouldn't consider it "coding for fun". I wanted the results badly enough to dedicate some of my free time to getting that done despite not really enjoying the actual "coding" part.
Most of my free time is now used for anything but coding and I'm cool with that.