I went to my local library this past week and saw this Lego Wall when I was there. Of course I took a pic & studied it to see how they made it.
Base Plates – 16 Gray 15×15. You can find these on Ebay for about $15 each.
Shelf – the narrow shelf allows kids to get up close to the wall to do their creative artwork
Wallpaper Tray – x2. These trays were the perfect size to fit on the shelf.
Lego – Ask for donations or purchase from Ebay.
Oh, and by the way, Congrats Germany!