my baby drove up in a brand new Cadillac

took delivery of a bag of 200 assorted slides that seems to have come from the estate of a well-travelled photographer. They seem to range from late 40's to early 90's.

This is one of my favourites. I projected it through a pair of sunglasses and the bottom third through a pint glass and then onto a cardboard box.

What i really want to do is take the projector somewhere remote, project a slide onto something big and blank and then blip it........but apart from hiring a noisy, cumbersome and not very discreet generator i don't know how to do it. the bulb in the projector is 240v so it ain't gonna illuminate off a battery.

any electricians out there can give me a solution ?