You could make these for an adult dinner or a celebration, but we love this idea for an atmospheric dinner. All you need to do is coat the bottom of your jars with clear glue on the inside and then add your glitter. Any color will work, but if you're making them for dinner then gold is probably going to be your best part. Lastly, add a fake candle and you're done.
We're not entirely sure if you'd be able to get away with adding a real candle since the inside of the jar is going to be covered with glue and glitter, but it still looks great nonetheless.