Simple, rigid, and triangular! The A-frame shape naturally sheds rain and snow while providing a cozy, low-ceiling pocket that holds a cat’s body heat effectively.

+-------------------------------------------------------------+
|              ORIGAMI A-FRAME CAT SHELTER                    |
|                                                             |
|                          /\                                 |
|                         /  \  [ TRIANGULAR ROOF RIDGE ]     |
|                        /    \                               |
|                       /  /\  \  [ CIRCULAR ENTRANCE HOLE ]  |
|                      /  /  \  \                             |
|                     +----+----+                             |
|                     |  BOTTOM | [ FOLDS FLAT ALONG RIDGE ]  |
|                     +---------+                             |
+-------------------------------------------------------------+

How to Build

  1. Score a large rectangular sheet of heavy cardboard into three equal sections to form an equilateral triangle.
  2. Cut a 6-inch circular entrance hole in one end wall.
  3. Tape waterproof plastic or tarps onto the outer roof panels.
  4. Fold along the scored center ridge; secure the floor flaps with Velcro strips so it collapses flat when unlatched.