I think, Luigi Colani should have a fountain pen design. You can learn lots of things from his designs. What about Gaudi , He designed Casa Calvet Door Handles set with squeezing his hands in to wet clay and than brass casting. There are structural design method , Organic design method or reverse an linear design method like art deco. You can make thin , thick or massive designs from them. Danish design school have lots of papers on deciding on a form for designers. But I liked your laser cut idea , its cheap , fast . All depends on the selling price and market .