My organized little firstborn

As an advent calendar this year, Gavin and I made a big Christmas tree to hang on the wall, and each day he colors, cuts out, and puts up a different ornament. If it were me (and I'm even a firstborn!) I would place the ornaments in a random - but attractive - order all over the tree. Not our Gavin.

Perfectly spaced rows of three ornaments each. :) Now if only he carried this over to keeping his room clean...