Oh, I still have my hp200lx. I "retired" it in January when I got the BB8830. But in certain particulars, I will always miss it. Of course, it was NOT a phone. But it had full Dos 5.x, along with lots of stuff. I had a spreadsheet for my exercise - hikes, bike rides, x-country ski - I could use the macro to search for and find a trip and move it to the top and total by type of activity. I had some others, too. What I've tried doing with GridMagic is moving the "table" to the top, copy the trip (distance, elevation gain, etc), and then insert it into the excel spreadsheet. But it is more tedious and not quite user friendly.
But the 200lx was amazing in what a range of dos programs (including automap) would run on it.