Essential ingredients for any good hunt are mini eggs because they provide lots of fun individual prizes, and larger eggs or, perhaps, a cute soft toy bunny for the real treasure at the end of the search.
It's a good idea to plan two separate hunts. The major one is where the kids move from clue to clue (perhaps with a reward of a Creme Egg or a Kinder for each one), while the second is more casual, with miniature eggs easily stumbled upon as the kids follow their clues.
● Under the kitchen table.
● In a half-empty egg box.
● In dad's sock drawer.
● Taped to a football.
● Taped to mum's back.
● In the laundry basket.
Narrow your list down to about six or eight of the best places.
Let's assume that we've decided to use the six hiding places listed above. The laundry basket is probably the best place for the final cache as it's nice and spacious. The next job is to work out the order of clues. Keeping plenty of distance between hiding places gets the kids running all over the place and heightens the suspense.
The note then reveals the first clue and the hunt is on!