Whilst standing still, hold "Shift" and "E" *, and the your inventory rows will be switched up row by row, allowing you to access non-active rows without having to open the inventory!
There is also a tool , Inventory Cycler, which allows you to cycle forwards (click) and back (right click/drop).
- Source: https://github.com/taikedz-mt/inventory_cycler
Download ZIP: https://github.com/taikedz-mt/inventory ... master.zip
License: LGPLv3
Textures: CC-BY-SA 4.0