What's this? It may help you, or vice versa, with a question elsewhere.
digeridoo?
Oh. It's not a crayon then?
It almost could be a blowpipe with darts for naughty boys messig about with their crayons 
but no, a digeridoo is what it is!
I think this one is a home-made one carved by some clever digeridoo-maker, I nicked it off Google images.
well done Helio! 