I'm going to be contrary (and potentially unpopular) here and say that you shouldn't try and work on your personal ideas on the weekend -- at least not right now.
Presumably, your ideas are something in the software development realm that you would to evolve into something that can financially sustain you and your family. By investing a significant amount of free-time into a personal software dev project, you will likely indirectly impact your performance on the software dev job for which you are currently being employed. These impacts could be burnout, distracted focus or fatigue. This is not necessarily fair to yourself or to your employer.
So, for now, I'd recommend jotting down your ideas in an 'ideabook' with supplemental information as appropriate. Once you get to the point that you may be ready to move on from your job, I'd revisit that 'ideabook' and see if there's anything in there you're actually willing to commit to and take a risk on. If not, then I'd close the book and come back to it some other time.
In the meantime, spend your free time playing games, reading novels, taking long walks or any other hobby that is not also your job.