Craft Ark has a quick technique to embellish plain pillar candles. Supplies are minimal and include metal daisy embellishments and split pins.
Simply bend the petals of the daisies; hold daisies to candle and then push a split pin (brad) through their center holes and into the candle.
Although the effect is great, I’d consider using glass or metal beads for even more variety, embellishment-wise. OR you could just use decorative brads or brad buddy combos like these:
Or…well….you get the picture.