Learning
I like to record what I learn as I learn it. I think it helps me to restructure some concepts into my own words, and it's useful to be able to refer to my own notes later.
Research Notes
I started my Research Notes when I was a grad student, and I add to them whenever I get the time. Eventually I would like it to be a somewhat self-contained textbook-esque collection that can be useful for anyone starting in lattice research.
Metadata
One of the projects I have helped with is the ILDG, which is the lattice community's attempt to store large numbers of configurations using a common format with searchable metadata. One can argue which metadata framework is optimal. Here is my attempt to understand some of the differences between JSON and XML.