Angle Adjustable Housing Connectors are useful for tidying up the cockpit and reducing cable/hose rattle. They snap onto your cables easily and keep them parrallel to each other. 

Once you've got your cables trimmed to roughly the right length, use a combination of these and rotatable connectors to keep the cables from smashing around too badly.

There are a few different sizes, make sure you get the correct one! Sizing:
4mm: most gear cables
5mm: most hydraulic brake cables, some gear cables (much less common, we only sell 4mm outer diameter)