Many Wagashi are made from a mix of rice flour, Shiroan (white bean paste), sugar, and other ingredients. Of those Namagashi are among the most beautiful, shaped as little art pieces and then served in tea ceremony. The right mix can be kind of an art of itself, but I want to try molding and shaping these tiny sweats with material that is more readily available before I start to experiment with making a recipe that I have nothing to compare against due to no shop within 2 hours making them. In a similar circle, I know of no restaurant that actively advertised with them.
What makes a decent substitution that is purely based on moldability and handleability to train to shape Namagashi?