From the few things I've done, here are the ones that are worth publishing... so, you see, no big deal.

NOPworklog

NOPworklog is small PHP5/XML-based tool for tracking your activities as simple as clicking "start" button can be. Doesn't need a database, so it's quite easy to get running, but it's not aimed at replacing CRM systems, if you need one.

Quicktags for Drupal 5

Original module for Drupal 4.7 was created by Bér Kessels (http://www.webschuur.com), quicktags.js developed by Alex King and is licenced under GNU LGPL (http://www.alexking.org). I've made few changes to 4.7 version and somehow made it compatible with Drupal 5, but the code is a bit messy. But it works. So you can download it here. (Original blog post here.)