I am professionally a software developer for 8 years and I simply don't have ideas for personal projects (Can't find any problem that I can fix with programming). At times I feel like that's natural and I shouldn't worry about it. But on the other hand, I do like to imagine having something personal that I can work on so that even if some days on my main job are not satisfying, I can always work on my hobby project and find that missing satisfaction.
End goal here is obviously to get better sleep as sometimes my mind feels dissatisfied with the day's work.
Funnily, I day-dream about the idea of already having done the boring parts (simply manifesting a project that already exists) of some personal project and only solving exciting problems in relation to adding a new feature or exciting aspects.
This creates a problem as I hate staring at a blank file not knowing what to write.
I've recently gotten into codewars.com a bit. (Not for a lack of personal projects.) I can recommend you try it.
The kind of projects that could fit depends on various things. What kind of projects would be of interest to you? Visual? 3D rendering? Algorithms? Utilities? Desktop software? Web? Known or new technologies? Which ones?