I was looking through a list of words you can spell (more or less) in hexadecimal in 32 bits, with the idea that some of them might be useful for cute magic numbers in a runtime system I'm writing. These are the ones that might plausibly be relevant to some part of the inside of a software system, organized by topic:
Containers: 1ad1e, ce11, 1a550 Indirection and naming: acce55, cf, deca1, 1abe1, 1abe11ed Commands: bade Size: c01055a1, f1ea, 5cad5 Scope: 10ca1 Brokenness: add1ed, ed5e1, ab5ce55, debac1e, deba5ed, defaced, feca1, faeca1, fece5, faece5, 10c0, 105e, Eb01a, bad, badc0de, Ada, a55, ba115, d0d0 Kludginess: c0bb1ed, decaf Uselessness: f1ab Non-brokenness: fab1ed, 5a1eab1e, ab1e, c001, b1e55ed Usability: affab1e Temporariness: 5caff01d Exceptions: b00, 5c01d Sentinels: cab005e Logic: fa15e, B001e, ca5e Hierarchy: b055, dad Collections: cab00d1e Arrays: ce11ed Trees: ba0bab, 1eaf Things that have been deleted: cea5ed, dead, decea5ed, effaced, de1, fe11ed, c105ed, faded, ebbed Things that are hard to describe: d00dad, 0ddba115 Weak references: feeb1e Run-time modules: 10adab1e Internationalization: 10ca1e, Babe1 Things lacking some usual feature: ba5e1e55, face1e55, deaf, 5eed1e55, 5e1f1e55, ba1d Recursion: ca5cade5 Graphical things: d00d1e, ea5e1, 5ca1ed Subroutines: c0de, ca11ab1e, d0ab1e Activation records: ca11ed Encoding: c0ded, dec0ded Ownership: deeded, 1ea5ed, ceded Security and denials of service: 5afe, f100ded, 5ea1ed, f0e Databases: DB OO terms: facade, c1a55, 5e1f, ba5e Large binary objects: b10b Higher-order programming: f01d Deception: f001ed Compacting garbage collectors: c0a1e5ce Ian Piumarta's design: c01a Dates or base-10 numbers: decade Things that are very determined or fault-tolerant: 0b5e55ed Information leakage: b1abbed, b1ed, b1eed Strings: babb1e, ba11ad Things that don't make sense: Dada, baff1ed Miscellaneous: aba5ed, a1fa1fa, ba5eba11, f005ba11, befa115, b1a2ed, 5eceded, ab0de, ab1de5, added, bedded, befe11, 1eaded, 5eaf00d