Soak the floral foam in water for 30 minutes. Tie the ribbon around it, as though wrapping a present. Use the long lengths of ribbon to hang the sphere from a doorway or similar structure, so you can work at a comfortable working height.
Hold the sphere steady and push in the box sprigs into it, taking care to ensure you work evenly all the way round. Try to cover as much of the foam and ribbon as possible.
Add the mistletoe to the sphere. Don’t worry if it looks a bit rustic and haphazard - that’s part of the charm of this style of natural decoration. Sit the battery pack for the lights on top of the sphere and weave the bulbs through the greenery, spacing them evenly. Carefully hang the ball in your chosen spot.
This large sphere of hanging mistletoe and box enhanced with twinkly lights is striking, yet simple.