I collect a lot of different things and sometimes forget what I need and what I already have. OneNote is great for keeping track since I can sync across multiple devices. If I see something I think I need I can just pull out my android phone and check my list at the store. Sometimes a short one line description isn't enough though, and OneNote offers great tools for that like adding images and web links (or just typing a longer description). But that makes your list unweildly and cumbersome.
What I would like to see is the ability to create a note on my android phone named a broad category and inside several small checklists. Each checklist has a title or header with checklist items below it. The header can be expanded to show the checklist items below or collapsed to hide them. Default should be collapsed for easiest navigation and then you can expand the ones you want to see.
Also each checklist item should be able to be expanded to show a description box where you can put additional text, images or links. That way you can have a short organised one line item and click it for additional information.