Fill a shallow bowl or container about two-thirds of the way with pebbles. Kids may prefer to use colorful marbles instead. Choose a clear bowl or container so the kids can see the bulbs form roots in the water.
Arrange the bulbs on the pebbles or marbles so they are approximately 1/2 an inch apart. Fill in the gaps between the bulbs with more pebbles and marbles to anchor them and ensure that the bottoms of the bulbs make contact with the water.
Pour water in the bowl or container until it touches the bottom of the daffodil bulbs. If desired, use colored water for decorative purposes and possibly to turn the blooms a different color.
Move the daffodil bulbs to a cool, dark location, such as a garage, for three to four weeks. Replenish the water as necessary. When green growth shoots out from the bulbs, move them to a sunny location.