Simple Linux T-shirts, because I found it inexplicably hard to find a nice,
high-quality black T-shirt with Tux the Linux mascot on the front, so I fixed the problem myself. Also hoodies and fitted and not-black
T-shirts.
The markdown2mediawiki.pl script I wrote to convert the Markdown-formatted wiki dump files
from the annoyingly-defunct hosted wiki site Stikipad into the
XML import format used by MediaWiki. (See
the MediaWiki manual's page on Importing XML dumps for details on how
to get the data into your MediaWiki instance.)
The motivator.pl GIMP plug-in I wrote to create (de)motivational posters. Install it with
gimptool-2.0 --install-bin motivator.pl. Requires the latest,
unofficial
Gimp2 Perl bindings and Gimp >2.0, of course.