Various projects. With C I wrote drivers and networking stacks for embedded systems, with C++ I worked for years on a the networking layers of a now long gone smartphone OS. With Rust I’ve been doing hobby projects like a library+application (win/linux/macos) for controlling WeMo switches on the LAN. Most recent is a Memory+CPU usage monitoring applet for the nascent COSMIC desktop environment.
It has replaced idly making selection squares on the desktop.