So there are four tangerines that my mother got. Now if you're like me your first thought on hearing this is... well truthfully it's probably, “I like tangerines and haven't had them in a while.” But your second thought is probably that you can make lamps with them. If not, it's got to be in the top five.
I learned that you could make lamps out of tangerines from the Official Star Trek Cooking Manual, which is not where you'd expect to find directions on making a lamp but it is made out of fruit and … well, theoretically olive oil, but I didn't have any so I made a substitution. I've had some limited success in the past with clementines.
So far my results with actual tangerines have been... Well, that depends on how you look at it. The two that I've peeled so far have utterly failed as lamps (one of them I couldn't even make a wick, on the other one the wick burned up) but they're really nice candle holders.
The reason for the difference in color between the two is that I oiled one of them. Oiling lets more light get through and, since it's supposed to be an oil lamp, the bottom half tends to get oiled anyway. The one I couldn't form a wick in I never bothered oiling. It looks more interesting that way, I think. (Though is obviously less useful as a light source.)
The pictures aren't of the best quality probably mostly because I have no idea what the best way to photograph a light source is. Especially something that glows instead of shines. If it's in a well lit place then you can't really see it's glowing. If it's in a poorly lit place, as in the case of the first picture, quality drops and the glowing isn't as clear as it might be, if it's in a not at all lit place... well you can really see the glow, but it's not exactly a crisp image.
The technical term for the lamps is Romulan Lucernae*, because Romulans, being Romanish, speak Latin. The next time you have tangerines, or clementines for that matter, if you're wondering what to do with the peel afterward you might consider making a lamp.
* Singular would be Lucerna. It's a simple first declension noun. My brain almost broke down when I went to verify that because I was looking at forms I had never seen before and very confused. Then I realized that I'd accidentally looked at the declension of the noun as it exists in Hungarian. As with most first declension nouns, it is feminine.
Hungarian is, based on things I've recently heard from Pthalo and Hannah, a very cool language. It just happens to be a very strange thing to see when you're expecting Latin.