This requires a little experimentation with drill bit sizes so try it on a sample board first. You want the marbles to fit snugly so they don't fall out (no glue required). And when the sun hits them from behind, you have sparkling stars of colorful art in your garden.
Get Rid of Fruit Flies the Natural Way Jar with lid 1/2 cup Apple Cider Vinegar 2 drops Dish Soap... THIS works like a champ.. I used a baby food jar and didn't put a lid on it and the amount if fruit flies it attracted and killed was amazing!!