Here is an assortment of various things that I find enjoyable, useful, and webpage worthy.
You may get the slides from my GRS talk on LaTeX here (downloads).
Here is an analysis (opens new tab) of the proposed 2018 tax plans by House and Senate will affect graduate students at the University of Utah.
For doing phyiscs research, invaluable places are the arXiv for staying up to date on articles in any bit of physics (and some other disciplines too), inSPIRE-HEP if you're doing more of a literature search in the vein of particle physics, and ADS if you're doing more of a literature search in the vein of astronomy and astrophysics (often has plain text of older articles too).
Falstad applets. These are a a collection of java applets written by Paul Falstad that simulate a variety of physics phenomenon. Particularly useful are the electrostatics, analog circuit simulator, and quantum mechanics applets.
Did you know that the first webpage is still extant? It still viewable on CERN's servers, which is where the internet (as we think of it today) began as a connection between CERN and Cornell University.
Biases are shortcuts we've internalized from our experiences in the world. We use many everyday in small ways that we typically do not notice but are ultimately hepful. Others, however, are mal-learned shortcuts that can be harmful or blind us to what is actually around us. A class of these that we do not see are called "implicit biases", and are usually due to the culture in which we've been steeped. The first step to addressing them is to identify them, and a great online resource that can help with that is the Implicit Bias Project from Harvard University.
If you ever wondered what silliness would ensue from a quantum mechanical theory based on Murphy's Law, my colleague Miriam Diamond has you covered with an article on "Quantum Murphy Dynamics" at the Uncyclopedia. Problem for the reader: from such rule breaking inanity, why do physicists scough at mystical/supernatural/magical claims?
Books that I have read that I have found to be excellent food for thought in the vein of physics and math.