Here is an exhaustive list of the userboxes I've created over time. Feel free to use them!

Code Result
{{User:Finemann/Userboxes/LaTeX}}
This user uses LaTeX and admires its power.
Usage
{{User:Finemann/Userboxes/LyX}}
This user uses LyX for editing in LaTeX.
Usage
{{User:Finemann/Userboxes/Texmaker}}
This user uses Texmaker for editing in LaTeX.
Usage
{{User:Finemann/Userboxes/AUCTEX}}
AUCTeXThis user uses AUCTeX to write LaTeX documents.
Usage
{{User:Finemann/Userboxes/Kile}}
This user uses Kile for editing in LaTeX.
Usage
{{User:Finemann/Userboxes/Bazinga}}
BAZINGA!This user loves to say
BAZINGA!
Usage
{{User:Finemann/Userboxes/Schizoid}}
SchizoidThis user has a Schizoid personality.
Usage
{{User:Finemann/Userboxes/RTFM}}
RTFMThis user believes that you should RTFM before asking questions.
Usage
{{User:Finemann/Userboxes/Megadeth}}
This user has traveled in the Train of Consequences
Usage
{{User:Finemann/Userboxes/Chickflick}}
Chick
flick
This user strongly despises chick flicks and pointless romantic movies.
Usage
{{User:Finemann/Userboxes/Mach}}
This user believes that Mach's principle is not just philosophy and require careful analysis.
Usage
{{User:Finemann/Userboxes/Clementine}}
This user contributes while listening to Clementine.
Usage
{{User:Finemann/Userboxes/Oldboy}} Usage