joyd is a very flexible program that allows you to execute commands via a joystick or joypad attached to your computer. One simple possibility would be to reboot when your keyboard is hung. It can use any device supported by the Linux Joystick Driver. Helper applications allow you to test the joystick status in your own shell scripts.
k118 is a commandline utility for driving the MAX-186/74LS373-based eight channel analog sampler sold as Kit 118 by Kitsrus. It supports four digital outputs and logging of the analog and digital inputs to a file with variable rates. It may be useful for electronics enthusiasts contemplating their own user mode parallel port driving programs.
lcccd14 is a kernel driver that gives normal user level programs the ability to communicate with the astronomical camera "OES LcCCD14". The module provides ioctl() commands for operating the camera electronics, setting up the cooling stage and controlling the integration of the image. It is intended to write a SANE backend later on that uses this module.
Ledcontrol is a program that shows information on the normally-unused LEDs on your keyboard. You can configure it to show virtually any TRUE/FALSE condition or arbitrary value accessible. Features include blinking LEDs, priority levels, user-made animations, a GTK+ interface, etc. Ledcontrol works both in X and on a text console.
libbgrab is a video4linux grabbing library to facilitate use of framegrabber cards and webcams through a few function calls. To implement constant throughput and to avoid frame loss delays, triple buffering is used through local buffer copying in a separate grabbing thread. The many demo and utility programs included can display live video to X, convert live video to ASCII, smoothly zoom live-video (using Glide), do some image processing (using MMX), and provide a stand-alone webcam image server.