We used:
Air drying clay
Coloured beads (collected from a local Scrapstore)
Tealights
:: We invited everyone to roll their section of clay into a ball.
:: When happy with the shape, push a tealight candle into the centre of the clay, making sure it's as level as possible.
:: Decorate your candle holder with the beads. These need to be pushed well into the clay to prevent them from falling out once it's dry.
:: Leave the candleholders to dry overnight. Remember to remove the tealight so the centre can dry completely too.
My girl wanted a candle burning in her room, so we swapped the wax candle for a battery-operated tealight.