Simple Regen Receiver kitted and offered for sale by the 4SQRP Group:

Introduced at OzarkCon 2014, this kit was designed in homage to simple beginners regenerative receivers of a generation ago. Many hams and radio enthusiasts were introduced to the hobby by building and listening to such classics as the Radio Shack Globe patrol, or the Knight Ocean Hopper. It’s been years since there has been a simple shortwave receiver kit on the market, so the Ozark Patrol is offered so that the builder of today can relive the excitement of tuning in the world on a simple receiver circuit.