Hi Belinda,
here are some suggestions, I hope these are still relevant, as this was posted almost a year ago...
I came across this link which talks about the psychology of employee motivation, its a great article that talks about little things you can do to motivate your employees for free
The Psychology of Employee Motivation
You can set up an Employee Benefits group online at Myzerr.com. Similar to Facebook, it is a social network for discounts and is free. The idea is that you invite local businesses to give discounts to your employees. It is easy to use and all the tools are there to help you set it up.
Myzerr
hope this helps,
Roee