Hive

Take an empty can. One side must remain closed, otherwise your hive will be subject to drafts and will remain unoccupied.
Cut the bamboo sticks (or other hollow stems) to the length of the can and fill the box. Make sure there is enough so that when you turn the upside down, none falls out.
Finish off by passing a string around your can, and fix it with hot glue. Don’t forget to add a loop so you can hang your hive in the garden.