I was just reading about this exciting QRSS Transmitter Kit by Hans Summers:

This 30m QRSS Transmitter Kit was produced by Steve G0XAR and Hans G0UPL. The kit contains a keyer chip programmed with the buyer’s callsign, all components, and a 2.5 x 2-inch PCB to build my QRSS transmitter project

More reading at Han’s website, however at 15 USD it looks like another kit I can add to my wish list!