My electronic filing structure is: Year, Month, MSC, Client, Date, Location. If there's only one location per date, I make it one folder. Receipts get scanned and sorted accordingly. When photos come off of the camera/phone, they go into the Client folder under a folder called "Originals". I then use Photoshop's batch resize tool to resize them all to an MSC friendly resolution, and sort them into the individual location folders.
Paper records get thrown into one of two boxes, which get dumped every 6 months.