A bunch of things that aren't code; plus a wiki for various musings
This paper describes a DNS solution I created to meet a very specific need in a multi-architecture build environment with a complex network arrangement.
Another paper about the multi-architecture environment. This time, I'm describing BOOTP and configuration of dhcpd in support of multi-architecture builds.
A decade or so ago I chanced across this table and have never been able to re-locate this exact source; others are similar, but never an exact match (I also lost the original file, so I don't even know the name). In any event, given an IPv4 Class C address space, it shows the possible subnets that can be created (neglecting the last 2 bits, of course). I re-created it in LibreOffice Calc and added the slash notation.
I used to play Star Fleet Battles a lot (like weekly). There was never a really good tactical map specifically for the game, so I decided to design one. This is a JPEG image of the result; it's a standard 42-by-30 flat-top-oriented hex map, sized for the 1-inch counters (from Module H). Around the border of the map is the SFB Sequence of Play (extracted from Annex #2), with references to the specific rules named. If it were printed unscaled, the image is about 48 inches by 44 inches; as most large-format printers top out at about 36 inches (as a maximum dimension), it'd likely need an (expensive) custom print job to produce at original scale (a scaled-down print job would probably be cheaper/easier, but the one-inch counters might not fit).
A little bit of whimsey, in the spirit of RFC 1121