LED candle timer... great idea. no worry about electricity or fire hazard.
Here's one from eBay. $9 free ship, pack of 4. Ships from Iowa.
http://www.ebay.com/itm/New-Everlasting-Glow-Flameless-LED-VOTIVES-Pack-of-4-with-Timer-Feature-/271380000887
Not sure how long it lasts... 5 hours a day...