I have been a "sort them by company" person for years. But for some stamps, I am sorting them by theme where possible. I have a travel section, a journal section (writing spaces mostly), alphabets, and now, sea and space with plans for another food and drink after I get another order in the correct box size lol. Why spend money on organization when I can spend it on crafty things : D.
Head over to Julia's Stamping Ground for peaks at more crafty spaces.