A lamp was an often small device that produces light. It could be powered by fuels such as oil, electricity or other means.
To provide more lighting to the table and the consoles, the situation room aboard Enterprise NX-01 was equipped with several lamps hanging from the ceiling. (ENT: "Terra Nova", "The Andorian Incident", "Civilization", "Fortunate Son")
Captain Jonathan Archer had lamps directly placed over the four drawings of different Enterprise vessels in his ready room aboard Enterprise. (ENT: "Terra Nova", "The Andorian Incident", "Breaking the Ice", "Civilization", "Fortunate Son")
Lamps were also installed in the cargo modules of a Y-class freighter like the ECS Fortunate. (ENT: "Fortunate Son")
Small fuel-powered lamps were stored in shuttlepods aboard the Earth Starfleet Enterprise NX-01. (ENT: "Shuttlepod One")
The Arctic Archaeology Team placed several long standing lamps outside their base camp at night to search the area for debris. (ENT: "Regeneration")
In 2268, an amnesiac James T. Kirk created a lamp while on the planet Amerind which allowed he and his wife Miramanee to cook twice as much food, and preserve food for times of famine. (TOS: "The Paradise Syndrome")
Tuvok used a small meditation lamp to help him focus while meditating. (VOY: "The Gift")
Oil lamps were one of the means Leonardo da Vinci used to light his workshop at night. (VOY: "Scorpion")