Right then. If you don’t follow me on github, this will be news to you.
Storage. https://github.com/DimitarChristoff/Storage – it’s a class that allows you to API localStorage or sessionStorage, when available – with a fallback to using window.name in older browsers like IE6/7. It can be used as standalone or as a mixin (implemented) class within any other class. It also namespaces each instance within the storage so it can occlude nicely.
Do you remember Router? I had liked it some months back. Turned out, it benefited from a rewrite / refactor and is now a lot more mootoolish. Though Rado accepted my pull request so I can probably delete my fork, leaving it there for now in case I think of anything else.