Use sand or pebbles. Some jars can be coated with glass paint to match colored bottles. 12 quart size jars are about Suggest different sizes. Small jelly jars are "quilted" creating a faceted glow from candle.
Mason Jar Lanterns Hanging Tea Light by TheCountryBarrel on Etsy - easy DIY! Small chain link, mason jars, decorative nonflammable filler and candles! Tap a hole with a nail for the chain to attach to the jar lid. And done!