I usually buy rice paper for raw spring rolls. For the filling I usually add rice noodles, vegetables such as finely sliced carrots/cucumber/fennel etc.
I always add protein, either thinly sliced smoked tofu or marinated baked tofu. I often add a few strips of nori seaweed. Fresh herbes; either fresh mint or coriander. You can also add a bit of seasoning either hot sauce or some sesame oil/sesame seeds.
Last night, I also added a few strips of roast red peppers and some sliced avocado.
As for the dipping sauces ; either or spicy peanut butter sauce, hot sauce or soya/lime juice with a few drops of hot sauce.
Preparation of the rice paper. I just quickly dip (no soaking, neither hot or warm water) the sheet of rice paper in a large container ( cake tin etc) for a few seconds and quickly place it onto a clean tea towel. Place the mixture onto the sheet and quickly roll. They keep perfectly well in the fridge until time to eat.