Psychology is kinda tricky - I keep my "screw-around" and "play-with-a-little-bit-of-this-and-a-bit-of-that" on a (not visible to the outside world) BitBucket account, as

(a) I'm never sure the code is high quality (idiomatic, proper variable naming, documented)

(b) I'm not sure I'd be able to complete it to the point where it's a decent-looking project, not some random half-done stuff,

so I don't want to be judged by it