Google "Balloon NH" and there are 98.5MM responses including a couple of upcoming balloon festivals in Pittsfield and Suncook Valley Rotary.
High 5 travels all over. I took my kids out with them several years ago for a Father's Day event, there were three balloons so it was an extra to be able to see other balloons, take their pix and have ours taken.
http://www.high5ballooning.com/