I have made some very minor Mushclient plugins, small helper addons, and without anywhere more sensible to keep them, I put them here!
Spellcheck, Mindspace and TM Helper v1.02:
This plugin will tell you how much mindspace all of your "spells" currently consume, and how much room you have left. It contains all spellcheck data for every wizzard spell to instantly look up any spell, and what your chances are of succeeding at every stage. You can lookup any magical skill and see all spells that use that method, and get suggestions for spells that might help you TM that skill. After installing, type "help mindspace" for a list of all the features and commands, and how to use them http://pastebin.com/raw/Cuw1heZZ
Klein Bottle Helper v0.03:
This is an extremely simple plugin that triggers when you "look" at a valid (chargable) klein bottle, and will add an extra output line informing you of how full it is and what size orbs (escaped spells) you can SAFELY capture without risk.
EFF Blockrate Stats v0.02:
MXP Notices v0.01:
This tiny little addon requires you to be using MXP in Discworld. It will add an extra output line whenever HP loss is detected, or XP gains over 500, are detected - even if those drops or gains wouldn't normally trigger the HP monitor (for example, fleabites, or XP gains from burials performed by other players).