Archi-Tessie

Simple toys are best. Lately, Tessie's been getting a lot of play out of a set of wooden blocks. She builds towers, castles and train stations, and has a particular and surprising fondness for symmetry. She has also impressed us with her ability to balance blocks on their edges. This tower is entirely her own creation, orange corbels and all:
And while one might expect her to be upset when these towers inevitably collapse, she seems to enjoy getting to start over: