I am often asked for recommendations for other art supplies like paper and brushes. Here are some of my favorite art supplies I use and love in my own studio practice, in case you want to try them out too.
BoaHong Watercolor Paper Blocks, all sizes and textures (this is my current favorite brand for good paper)
Canson XL Watercolor Paper Pad, 9" x 12" (affordable practice paper)
Sakura White Jelly Roll Pens, 3 pack in assorted sizes (love these for adding details on top of dry watercolor)