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 Build the most original witch’s cottage and decide who will receive our donation stocking this year. 

Thank you for your interest in our Treo-X-Mas-Challenge!


Let us test your creativity and social commitment. Simply register on the form below to receive your free gingerbread house set.

Registration deadline is on 15.12.2017!

You can also build your gingerbread house in a team. What matters: let your creativity run wild! Once done, send us a picture of your masterpiece. Our managing director Hanno Frömming will add EUR 20 each to our donation fund for the first 50 submissions. So it is up to you how much will be collected in the end! We will select the winning picture after Christmas. The winner may decide which charitable organisation will receive the total sum.


  • You can register your company by filling out the form below. The registration deadline is on 15.12.2017
  • You can then look forward to our gingerbread house set that we will send to you promptly
  • Test your creativity! Build a unique gingerbread house, there are no limits to your creativity

  • Take a picture of your piece of art and upload your picture to this page before 24.12.2017 or send it to

   Terms of participation

  • Only one team may participate per company (if several teams register, all further teams enter a waiting list and enter should any spots open up – so simply register!)
  • We trust in your sense of fairness; please only submit gingerbread houses you built yourself
  • EUR 20 then make their way to the donation fund for each of the first 50 registrations
  • Set up your house, eat it all or donate it (for example to a kindergarten or retirement home)

Treo - Labor für Umweltsimulation GmbH

Tempowerkring 19 - 21079 Hamburg
+49 (0)40 709 73 76-0   I

Edisonstr. 3 - 24145 Kiel
+49 (0)431-719 71 49   I


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