Find a diamond in the candle
OK, well. The small Pop-Up Diamond Candle has a 1 in 50 chance of containing a 0.15 carat diamond (worth hundreds of pounds) and the large candle has a 1 in 50 chance of containing a 0.25 carat diamond (worth over a thousand!). Amazing.
This all happens when the President of the Pop-Up Paris company (under the watchful eye of a band of heavily-armed henchmen in a secret underground lair) inserts the diamonds by hand into the wax mould of the lucky candles.