This Linux kernel module create a device called /dev/xkcdrandom that returns values that are guaranteed to be random.
To build it, you'll need the linux-headers package for your current Linux kernel. Then, run
make
to build the module, and load it using
sudo insmod xkcdrandom.ko
You can then enjoy your randomness by reading from the character device /dev/xkcdrandom!
All files in this repository are available under the terms of CC0.