@liaizon @poemproducer Not all tools are useful, they can be gimmicks, decorative, or ceremonial. I favor their definition as objects we use to manipulate the world with, physical or not doesn’t matter. Needs something unique, such as such as the
#ToolsForThought tag, maybe
#ToolsForPlay or
#ToolsForCreation? Here’s a collection of many such little tools from my bookmarks:
http://www.nathalielawhead.com/candybox/the-wonderful-world-of-tools-made-by-small-teams-solo-devs-and-shareware-weird-beautiful-and-experimental-things-to-be-creative-in-an-analysis-on-building-for-approachability 
The wonderful world of tools made by small teams, solo-devs, and shareware (weird, beautiful, and experimental things to be creative in + an analysis on building for approachability)