Pour the flour, salt, baking powder, water, and oil into a large bowl. Mix the ingredients together. If needed, add a little extra flour or water until the dough reaches the desired consistency. If you are going to make dough with multiple scents like we did, separate it out into smaller bowls. Add a few drops of essential oil or vanilla extract to each bowl. We even added a few drops of food coloring to match the scent with an appropriate color. (Example: We added yellow food coloring to the dough being scented with lemon essential oil.)
Blend the oils, extract, and/or food coloring into the dough.
Once your dough has reached the desired consistency, scent, and color, it's time to hand it over to the kids for some sensory fun!