We don't have "souvenir " specific shops like other places. But every "touristy" thing has its own gift shop full of NH branded stuff. Lots of it is closed this time of year so you have to pick the indoor spots that are open year round. Kellerhaus, fun spot, children's museum in dover. See science center in Manchester, the aquarium next to storyland. Odiorne point. also almost all the gas stations have something with "live free or die" written on it