In the Roman Catholic Church, candles are placed before a statue of Jesus or of the Blessed Virgin Mary. Often, in older or traditional churches, this will be before a side altar. Candles used may vary from long, taper-type candles to tealight candles. Tealight candles are either placed in holders or just on a platform in front of the statue. Long candles may be placed in a special holder. The longer candles seem to be more common in Europe -- the above photograph is from a French cathedral.
A popular and very traditional hoodoo spell, often used for any situation where you need to control someone with magic , is the namepaper-in-shoe spell. It's very easy: you write the target's name 3, 7, or 9 times on a paper (depending on intent and who's giving instruction) then fold it up, sometimes after dressing it with oils or powders, then put it in your shoe. This "keeps the person underfoot" or "stomps out the trouble" or any other number of metaphors. I had this work several times over the years. In one instance, I was working for a very unpleasant boss, on a short-term job. It was the last day, and I only had about 3 hours of work left on the project; and I wanted him to up my pay for the day since it almost wasn't worth the trip across town for the amount he was paying me, for only 3 hours. He was very reluctant. So I wrote his name 3 times on a 5-dollar bill he'd given me, and dusted it with Bend Over powder. He paid me what I ...