I think the greatest area that a small company could use help in is learning which tools are out there i.e. answering this very question. For instance, one firm I know had no idea how useful bill.com was and it saved them 10s of manhours per week but began using it years after it was offered.

The other area is workflow: you use software X and software Y in this way, but did you know most other companies link them up with software Z in the middle and it works much better, so long as you check the box that reminds you to tag the invoices (or whatever).