metric wrenches - rachetting.
various metric deep sockets w/driver (standard sizes for Miata)
adjustable wrench
needle nose pliers.
bailing wire, duct tape, electrical tape
Craftsman used to sell a truck tool box that fits neatly in the resess in the trunk bottom. Ask to see the one in Motorollow's car if he is there tonight. EDIT: Apparently they still do - Linkie