Nontrepreneurial idea: Invigilation Support Service

I'm thinking that The Doomsbury Set should set up an Invigilation Support Service to provide company, sustenance and support for those invigilating art exhibitions. I envisage a small van loaded up with coffee, wine, bread, olives and a big lump of cheese travelling from gallery to gallery. Shoulder or foot massage might be offered. In addition we would come prepared to gossip about the other invigilators, numbers of visitors, quality of curation etc. As is our usual practice the Negative Business Model (NBM) would apply: instead of ‘customers’ paying for this service we, members of the impoverished Set, would donate an amount to them for the priviledge.