My mother doesn't trust me with candles, fire, really anything that can kill us all in a matter of minutes so, i hide them. on and under my wardrobe. In shoe boxes under my bed, hollowed out books, behing things, anywhere i can actually. SO if fear of confiscation of your items, not just afraid of your mother finding out. All the places are good.
I'm in around your age, and i know there are just things you just can't tell.