Fill a large shallow dish with warm water. Submerge one rice paper sheet into the water for about 10-15 seconds until soft and pliable, then remove and lay it flat on a clean plate.
Arrange a few shredded carrots, mint leaves, cilantro, and slices of shrimp or tofu near the bottom third of the rice paper sheet.
Fold the sides of the rice paper inward over the filling, then tightly roll from the bottom, pressing slightly to compact the fillings and seal the edge.
Place the finished spring rolls on a serving platter. Repeat the soaking and filling process for remaining rice paper sheets.
Serve the spring rolls with peanut sauce on the side, optionally garnished with extra herbs for presentation.