This is the confluence of completing one of my other Hearthfires mods, and reading Sir Terry Pratchett's book "Sourceror". I was looking for my next mod project, and adding at least one of those characters to the game seemed like a good idea at the time. Rincewind, or Nijel the Destroyer, would not be much use as companions, but Conina, the daughter of Genghiz Cohen, a.k.a. Cohen the Barbarian, was a different matter. I also realised that giving her a salon in the entry to Lakeview would let me make it another Hearthfires job.
It actually ended up as a choice of two mods. The full version can be used if you have not yet built Lakeview, as it lets you make the salon as part of the build. The lite version adds the Conina companion and does the rest via console commands for those who already have too much completed.
In either mod, you can buy Rincewind's hat (no "wizzard" marking) and robe from the Riverwood Trader. A Nijel can use regular gear. He just needs to be tall and thin. I considered making a Cohen NPC, but balked at making a suitable beard. It would need its own skeleton, and morphs for the mouth region, all of which are a lot of effort for one NPC.
The Fake Wiki provides more details of Conina the companion.
Outside the salon (with Nijel).
Adventuring in the Rift with Rincewind.
Rincewind at the salon.
Mod as last uploaded to the Nexus for LE.
The readme has not been updated, so references to the Nexus site are obsolete. This is now the only legitimate source.
The mod is packaged as a BAIN archive, because I use Wrye Bash. That is compatible with other mod managers, but may require some extra work. I will NOT be re-packaging any of my mods for other managers, especialy not Nexus ones.
Install either the lite or full version, not both.