I do have a small number of mini side projects up on GitHub. I wouldn't mind doing another one, but can't come up with an idea for it. Also, it's tough to concentrate in my current state.

And I agree, I think using those whiteboard sessions is a negative sign for a workplace, but I'm not in a position to be picky at the moment.

I am trying to improve on the things I know I need to work on, namely algorithms. I just don't have a knack for it, and I've never needed to use them this actively in my career so far.