Hanukkah candles can be bought in sets of 44. My older daughter came home from preschool with a box, which is how I came to know this.
That number surprised me at first – but on each of the eight nights of Hanukkah you light one candle (the shamash) and then use it to light the number of candles corresponding to the night. So you need 2 + 3 + … + 9 candles; summing the series gives 11 x 8 / 2 = 44.
It does seem like they should give you a few extras in the box, though, in case something goes wrong.