With a $200 donation to the GSBC prize pool, Samtec has become the most recent GSBC sponsor. With headquarters around the world, Samtec specializes in connectors of all kinds to allow many different chips and boards to work together - RF, optics, ICs, board to board, they have it all.
What makes them especially great for HABers is their extensive free samples - before you buy parts in bulk, try out one or two to make sure its what you need and to test out different projects on a low budget. They have a fantastic selection and great customer service, so check them out at https://wwws.samtec.com/