They can hold the rice paper in place when you do your brush painting on an easel! These mini magnetic paperweights work great with a magnetic white board, which you may get from Walmart or any stationary stores.

These mini magnet paperweights are so strong that they can hold both the rice paper and felt pad firmly on the magnetic white board. Even when you paint outdoors,  the rice paper will not be blowed away by wind. Unlike clips or push pins, they will not cause any damage to the rice paper.  

3/8" dia. x 5/8" thick
Nickel Plated
Axially Magnetized