Promotional massagers are a great gift item for any go-getter. These small, handheld items are battery powered with two AA batteries (easy to find at any drug store!) and provide some much needed relaxation to recipients.
With a vibrating disc and lightweight body the recipient will be able to massage a specific location of discomfort. For restaraunts, these are a great holiday gift for employees after standing on tired feet. Labor workers will also appreciate the sentiment after a hard days work.
For a cheaper non-electronic massager, check out the H-ball. These are inexpensive enough to give to trade show goers or event attendees.