Although the James Bond-esque appeal of a high-tech lab cannot be denied -- video cameras mounted on the walls and ceiling with pan, tilt, and zoom controls allowing you to follow participants' movements! Video editing equipment so you can create a concise presentation to summarize your findings! Auxiliary keyboards and mice to control participants' computers from the adjacent room! Keystroke logs of all user input! -- it's probably not necessary for your purposes.
A funny, and true feeling intro to a good down to earth article on getting out there and doing it versus ... well, everything else :-)