Christmas Quizz!

Don't worry we'll give you some hints... 

You are all invited to send your answer by inbox and not as a comment.
The first 5 persons to guess will win à T-Shirt, here the link to our Shop

---

HINT N° 1 - It's no just 1... but 2 big BIG presents.
Santa will be delivering them in our headquarters ahead of time, next wednesday (13th of December). Yeahh!!

HINT N° 2 - It will allow us to grow delicious edible mushrooms in the best conditions of hygine, using nothing more than agricultural biomass, brewer's spent grains, coffee grounds and some mist.

HINT N° 3 - We will be able to upcycle tons and tons of wood, cardbord and other ligneous and cellulosic wastes in low tech and in soilless mycelium culture, to develop byproducts and eco-biomaterials.

Have you solve the mystery question?
This small contest will be closing Wednesday, the 13th of december.

The name of the winners will be published here, along with the answer to the mystery question.