Harry Potter Scavenger hunt Riddles?

So I plan on doing a HP themed scavenger hunt. I am awful at writing riddles though and was looking for a bit of help. The items we are searching for are; Felix Felicis, Love Potion, Berti botts every flavor bean, acid pops, Pygmy Puff, Puffskins, Snitch, broomstick, pumpkin juice, butterbeer, house elf, Fantastic beasts and where to find them book, dragon action figure, axminister flying carpet, pocket sneakoscope.. The locations for items to be hidden are all over the school indoors and out. I just can not write riddles to help them find them.