I just have mine in a hidden folder with a really boring name like "stack-trace overflow" or some stuff like that, I don't really worry too much that anyone in my house will even go in my room while I'm not in it but I do have younger siblings so it's more of a "just in case" sort of thing.
Besides that I don't really agree with leaving my research lying around on my desktop, for me it'd be kinda like if I printed the pictures out and left them lying all around my bedroom floor