Heck yes, all the time. While it seems like the major computer/OS vendors these days are trying to turn computers into limited purpose appliances, I was first exposed to computers as a child in the late 70's, when it was expected that anyone who owned a computer would also want to program it for their own purposes. My own personal projects tend not to be very large in scope, but can be quite handy. Some examples include:

- A Pomodoro timer that has exactly the features and user interface that I want

- A script to perform backups of select files and directories from a source drive to a specified backup volume

- A "pixels-per-inch" calculator that allows me to compare the resolutions of displays that I may be interested in purchasing; by entering the width and height of a display in pixels, and its diagonal in inches, it calculates the density in pixels-per-inch, and the dot pitch in millimeters

- Various user-friendly graphical interfaces to aid in solving different types of puzzles (think sudoku-like logic puzzles)

- Programs to actually solve various types of puzzles all on their own (I've written over 70 of these in the last 10+ years!)

- Various command line scripts for code management tasks (i.e. useful for sofware development itself)