One project with potential Newton use is to add a simple serial port driver over USB to the Olimexino. This is mostly to understand how such a driver works in general, and if there is a possible way to add something similar to the Newton. There are of course integrated USB to serial chips already available, and solutions for the Newton, but maybe there are some other profiles which could be implemented.
The driver is written in Forth (for quick results). During development, logging is of course a useful feature. But there’s a way not to do it, and that is to log in the interrupt handler code :). Maybe some color coding of code which is called in an interrrupt handler would be useful!