Sorting a bank is really easy. It's best to put common used tools on top, so you can withdraw then quick. Then it's best to put quest items together, and skilling items. Also put armour/robes/arrows next to each other, since they're all got something to do with combat. Put tools that dont have duplicates and can be taken out of your bank on bottom. (Things you're going to sell, in my case also fury, slayer mask, etc) Hope this helps some who want to sort their bank :