This $20.00 NH DollarSaver certificate is good at J & J Supply and Rentals, Salem, NH. Certificate can not be combined with any other offers. Fantastic decorations, popcorn, cotton candy and snow cone machines, Chafing dishes, sturdy tables and chairs balloons and helium tanks. J & J has everything you Need - over 1000 different balloons – they even sell dry ice! They’re like a modern-day General store!