The blueberry fields on Blue Job in Farmington/Strafford should be in season now. I haven't been up there in a few weeks, but I took a trip there last summer with the kids at this same time and they were great (made some amazing muffins). If you've never been to Blue Job, the area between the summit of Blue Job proper (with the fire tower) and "Little Blue Job" (the lower one with the bald top and AMAZING views) has what I would guess as 5+ acres of blueberries created by a controlled burn in the area once every few years. A really special place for being so far south in the state. You can see Monadnock, Kearsarge, Belknaps, Ossipees, Chocorua, the Presidentials...
Also, yesterday, I took a trip up Madison on the Upper Inlook (Kelton Crag) and we feasted on ripe blueberries the entire way along the ledges.