Great post!

Others have mentioned the HPMOR-style "take a poll of different aspects of your personality," which I have found to be entertaining and useful.

I'd also like to endorse the method for troubleshooting. I got the idea from Ridiculous Fish's blog post from 3 years ago.

When I have a technical problem I'm stuck on, I try to ask myself "What would someone who's smarter than me do?" This is really just "imagine a parody version of person x and see if that causes you to think about the problem in a different way."

I like to consult Imaginary Dr. House ("The problem is something very rare and obscured because your data is lying to you"), my former boss ("The problem is the most obvious thing it could be, trust yourself and go solve it!"), my college roommate ("Maybe there's a YouTube video from a dedicated hobbyist that explains this"), and some others.

I wrote up one experience with this technique (not as good as Ridiculous Fish's) a few months ago, when I had a baffling issue to solve at work (FTP on April 26th at 2 AM).