If you could find a jeweller and had an understanding of basic electrical systems, you could probably get a rudimentary capacitor and engine going. From there, who knows what you could do. Maybe even lightbulbs.
You could fill it with co2 .put an animal bladder on the mouth of a clay bottle where something is fermenting like wine or beer. The yeast will produce a fair ammount of c02 and fill the bladder. Use the bladder to fill the bulb. It wont last long but it will be longer than just air