How to Hang LEGO Buildings

Cut a square box in half horizontally so that the box halves have approximately an even depth. The depth of the box before cutting should be at least four inches. Cut away the box flaps.

Cut a two- to three-inch slit (depending on box depth) in two sides of each box almost to the edge, in the center of each side. On one box, cut the slits in the bottom side and the left side. On the other box cut the slits in the top side and right side. Once assembled, one box will be flush against the wall. The lower box that intersects into it will have a small gap between the box and the wall, the majority of the mounting support coming from the top, flush box.

Slide the slits on the two boxes into each other, connecting the two boxes together. See the ArtIsHelpingChildren.org reference for a visual of what the completed assembly will look like.

Add tape to the outside and inside edges of the boxes where the slits interconnect for added stability.

Paint the cardboard, if desired, to add to the LEGO display.

Place larger LEGO buildings inside the main areas of the two boxes. The intersecting slits will create a smaller box shape on the inside of the two boxes as well. This area can hold two small LEGO buildings, one on the inside of the smaller square and one on top of it.

Hammer two nails, one for each corner of the top, flush box into the wall. The boxes will hang from these nails. For added support, add two more nails under the inside corners of the lower box. The nails will need to protrude out of the wall further than the set in the box above it to catch the corners of the box since it is not flat against the wall.