You can use any DIY project to get a good oil lamp. For instance - you can use an oil lamp made from a glass bottle and string the wick through the hole created in the cap. It would help if you made more holes to ensure that the oil burns well and a sufficient oxygen supply. If the wick is not close to the oil, it may not burn.
For the best results, it is recommended to use the lamps available online at the Indianshelf website. These lamps are more effective than any DIY solution.