A great find on the material...
The young Fig tree branches are hollow, soft enough to be easily cut with a knife and just hard enough to hold the plugs tightly at both ends of the whistle.
Well, apart from the risk of being labeled as "annoying neighbour",
it was fun to have a little bushcraft project like this to share with the kids at home nevertheless.
Sorry neighbours..... Fweeeeeeet...!! Fweeeeeeeeeeeeeeeeet...!!!