I recently spotted these during a trip to the local Walmart and loved everything about them. They are battery operated (2 AA) and come in an array of various shades each with a different design + scent. They even have adorable autumn themed shades featuring spooky spiders or pumpkins in wonderful fall scents.
The only downfall is that a luminary starter kit cost about $15 ... So perhaps they'll offer a coupon for them soon?